Secret Operations Center: Reroll Odds, 16th Chest Pity & Treasure Maps

Comprehensive guide to Secret Operations in Last Asylum: Plague: reroll odds (UR 8%, SSR 24%), 16th chest pity guarantee, 7-piece treasure maps, plunder caps, and VIP features.

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🗓 Updated: 2026-09-15

The Secret Operations Center is a permanent headquarters building and a vital daily pipeline for free diamonds, Golden Recruit Tickets, Treasure Map fragments, and development resources in Last Asylum: Plague.

Secret operations require zero stamina, risk zero soldiers, and directly yield points for both Alliance Duel and Kingdom War (KvK)!


🎯 Task Rarities & Reroll Odds

Tasks appear in 5 rarity tiers: Common (White), Uncommon (Green), Rare (Blue / SR), Epic (Purple / SSR), and Legendary (Gold / UR).

Free task refreshes are awarded daily and during 3-day cycle resets. Refresh odds are distributed as follows:

Task RarityRefresh ChancePrimary Rewards
UR (Legendary)8%Diamonds, Golden Recruit Tickets, 15% Treasure Map fragment chance, top event score
SSR (Epic)24%Diamonds, Purple Skill Badges, 5% Treasure Map fragment chance
SR (Rare)68%Resources, speedups, baseline skill badges

[!TIP] Reroll Strategy Always discard Common (White) and Uncommon (Green) tasks. Strive to lock in SSR and UR assignments — they account for the vast majority of diamonds, treasure maps, and competitive event points!


🗺️ Treasure Hunter & The 16th Chest Pity System

Completing high-tier secret tasks grants a chance to acquire ancient Treasure Map fragments:

  • SSR Tasks: 5% chance to drop a Treasure Map fragment.
  • UR Tasks: 15% chance to drop a Treasure Map fragment.

There are 7 unique Treasure Map fragments in total (Numbered 1 through 7).

💎 Hidden Pity Guarantee:

[!IMPORTANT] The 16th Chest Rule: If you open 15 consecutive chests without receiving a single UR card, the 16th chest is guaranteed to contain a UR Treasure Map fragment!

Your bad luck is strictly capped by the game system.

Treasure Expeditions & Alliance Swaps:

  1. Full Set Expedition: Collecting all 7 unique pieces unlocks a legendary treasure expedition yielding monumental rewards.
  2. Alliance Trading: If you receive duplicate fragments (e.g., two copies of Piece #3), you can list duplicates on the alliance trading board to swap with guildmates.

⚔️ Plunder and Assistance Caps

  • Plunder Limit: You can plunder up to 5 foreign operations per day. Plundering awards free resources with zero troop casualty risk.
  • Assistance Limit: You can provide assistance to alliance members up to 5 times per day, speeding up their transit time and earning helper rewards.
  • Queue Capacity: Each expedition dispatch queue can handle up to 4 secret operations concurrently.
  • Zero March Slot Consumption: Secret operations do NOT consume standard world map march slots, allowing simultaneous resource farming and monster hunting.

🔓 Sanctuary 27 Unlocks: Super Refresh & Super Deploy

  • Sanctuary ≥ 27 opens Super Refresh — one-button refill of the whole board to golden (UR) rarity — and Super Deploy, which auto-dispatches the full board at once (check troop counts first: Super Deploy commits everything visible).
  • Aim for gear stones and skill badges as the recurring bonuses; the headline rewards are UR shards, and a good refresh lands 3–4 per day (~4 UR shards/day is the benchmark high rollers hit).
  • Even if you sleep on it: yesterday’s unfinished 4-day boards sitting at 12/12 (after overnight) are worth keeping, since partial bonus overlap with the next morning’s dispatch still cashes out.

👑 VIP Unlocks for Secret Operations

VIP level progression progressively automates and supercharges operations:

  • VIP 6: Unlocks Auto-Dispatch for one-click assignment.
  • VIP 10: Batch queue management and instant auto-collection.
  • VIP 12: Unlocks Super Mode (Super Operations), granting vastly amplified milestone rewards and accelerated task completion times.

📋 Daily Checklist

  1. Refresh tasks to eliminate Common/Uncommon slots, aiming for SSR and UR.
  2. Dispatch all 4 slots on active tasks.
  3. Plunder 5 foreign operations for risk-free loot.
  4. Assist 5 alliance members in the alliance overview tab.
  5. Check the Treasure Hunter tab to trade duplicate fragments with guild members.

📊 Score & Reward Tables

Verified values from game client data (v1.0.87), source: wiki-last-asylum.com. Base values shown without Academy or event research bonuses.

Source: wiki — covert-ops

Top line (quality 5)

LevelHeroes neededTimeHero XPAlso gives
11 hero lv 25, 1 of quality 5, 1 at stars 14 h913,770Secret Reward 32, UR Hero Omni Shard 1
22 heroes lv 65, 1 of quality 5, 2 at stars 24 h3,069,000Secret Reward 62, UR Hero Omni Shard 1
32 heroes lv 90, 2 of quality 5, 2 at stars 24 h7,108,200Secret Reward 92, UR Hero Omni Shard 1
43 heroes lv 100, 2 of quality 5, 2 at stars 34 h9,108,000Secret Reward 122, UR Hero Omni Shard 1
53 heroes lv 110, 2 of quality 5, 1 at stars 44 h12,177,000Secret Reward 152, UR Hero Omni Shard 1

🎥 Video guides

Curated video guides and strategic breakdowns from community creators

📝 Text Transcript 11:26 (686 сек) ▼
Full Transcript:
Do you need help getting a lot of chests? What's up, guys? Corpus Gaming here, and today we're going to talk about Ops missions and how to get all
these wonderful chests to really boost your account. You know what to do. If you like these guides, smash that like, hit that subscribe, and let's get into
hit that subscribe, and let's get into it.
So, guys, we're going to discuss the Covert Ops missions, but beforehand, I just want to say at the end of this video, I'm going to open up a lot of
chests, so stay tuned for that. And we're going to see if I'm getting some lucky rewards. And what we have is lucky rewards. And what we have is followed.
Uh we have the Covert Ops missions, and here you have the stars, and once you have a higher sanctuary, the more stars you get. Five stars are the max to get,
so that is pretty great.
Uh here we have some other information about who helped you and who stole your uh Covert Ops uh rewards. And here we have some basic information about what
the whole thing is about.
And here we are, the most important stuff. And we got two things here. What you want to always get is purple Covert Ops missions or uh you are Covert Ops
missions. And we have two options for refreshing. We have one refresh here, and I'm going to do this in the for the sake of science cuz I I messed up. Um
I'm going to press refresh, and it's going to ask me, "Are you sure cuz you have everything?" And here we are, we reset a bunch. And uh what you really
want, you want to get full golden uh you are sure. So, we press refresh.
And now it's three purple, and that's also fine if you're free to play. You can get these purple, but you really need to look at what the rewards are.
You want to get gear stones or skill badges. Those are the rewards you want, but we want golden. So, I'm going to refresh one more time, and it's not
working out for me, so I'm going to do the following. At 27 sanctuary, you unlock super. And And have the super refresh and the super deploy. The super
refresh is going to basically refresh everything to golden. And as you can see, this is okayish. I wish I got some more gear stones, but it's okay. We got
some two UR shards here. That's going to be amazing. And as we look down here as well, I've had more UR shards here. And these four are from yesterday that I did
before I went to bed. So, that's why there's 10 12 instead of eight.
But as you can see, you can get a lot of UR shards. I got four UR shards this day. So, that's pretty great. That's going to help me really boost my stars
on my characters.
So, that's it for the missions. You can also do super deploy. I've sent my troops out already. But if you do super deploy, you must make sure that you have
this one set up. Cuz if you don't, you might send them to the wrong chest. Uh blue ones maybe. And then you have uh messed up for the day. There's no way to
return that.
So, that's it for deploy and uh picking out your chest.
So, we are at the alliance member quest.
And what you can do here is help our alliance members uh finish up the quest.
What we do want to look at is we want to basically only do the UR missions cuz they give out more of these secret rewards and you get more chests. And
that's what we want.
We want to get those chests. So, but if there's only SSR, you really want to look at these ones. You want them to have the gear stones. And I know 48
doesn't sound a lot, but in the end, everything adds up in the end of the week. So, you really want to focus on the skill badges
or the gear stones. And most the best ones are the UR missions cuz they give a lot more.
Let's go down here. We have a few. And as you can see, it's really a lot more that you get for the UR missions. Also, Uh six chests instead of three chests,
so that's that's that's something extra.
Then we go to the next part. So, we got the treasure maps here, and what we want to look at the following. We got all these pieces, and we want to collect a
full treasure map, so we can collect rewards, and you can get one explorer, and you can explore one time, and you get one time a chest, and you can get
get one time a chest, and you can get multiple treasure maps if you have multiple full treasure maps, and you can get more
explorers. And once you hit 15, you get and definitely get an UR chest, but you can also get it sooner if you're lucky, but it's all luck. Here we have
some basic information about the treasure maps, and here are the rewards that we will get from these maps.
And here is the pocket watch, and some curio, and we have the R2 shards, the Harper shards, skill badges, and the gear stones, and that's the most
important pieces in these maps. We got the SSR chest. These These also drop a few shards, not much, but still few shards, not much, but still something.
And this is nothing. It's the gear stones and the skill badges, but it's really nothing.
We want to focus on the SSR and the UR, of course.
And what else do we got here? We can also trade the maps with our alliance, and as we go here, and we go to alliance member trade, and what we can do here,
we can basically say, "Hey, I want to gain this piece of map, and I'm going to trade it for the ones that I got the most." And then we're going to initiate
the exchange, and here we go. And what you always want to do is you want to also share it in the alliance chat, so members can see it, and they can press
help. And here we have also the exchange and sadly I cannot help him cuz I need this piece as well.
And that's it for the treasure maps.
And that's it for the treasure maps. And I hope this helped. We are going to now show you guys how to attack enemies ops missions.
To visit the other servers to collect those chest, we want to go to kingdom war and we really want to go to match information, grouping and here we have
all the servers that we are facing and this server we are fighting cuz it has the red label, but it doesn't matter for the chest. We just want to visit the
the chest. We just want to visit the server.
And what we want to do here is we want to basically scroll out a little bit and find the enemy hives. Here we have a nice hive and what you want to do is you
want to really check out the map and see if there are some golden chest.
I'm going to skip a little bit till I find the chest and I'll be right back. So I found a chest and here we have one. It's going to take 15 seconds.
It's not the greatest chest. There are better ones, but it has to do just for the sake of this video and let's go grab it and you
want to be really fast with this cuz there are a lot of people lurking around. And what you can also do if you grab it, you can share it in the world
chat with your other server so everyone can enjoy these rewards. I found another one here.
And you need to make sure you press the right one and this is a good one actually. It and it's gone.
And that's why I mean you have to be fast cuz they are collecting it as well.
I'm just going to scour a little bit here to see if we can find something else and if not, I will do these later once I've finished this video, but you
understand the assignment. You want to scour the map, find those hives, and basically find people with UR chests. A lot of people are also sharing in the
alliance chat. So, make sure that you are active, and then you can get these chests cuz the difference is a lot. You can see here,
you get six chests and some skill badges, and here you only get three chests. So, and then it's all about numbers. If you cannot find it here,
remember you can just go to Kingdom remember you can just go to Kingdom Wars, Royal Match Information, Grouping, and you can just go to another server, rinse
and repeat, go find those hives. Here we are, and what we want to do is just see if we can find another chest, and we see
one here. Let's see the timer, 7 minutes, so we got to wait a little bit for that, and I'm not going to waste you guys the time to stay here filming for 7
more minutes. And I think it's a nice time to start opening some chests, and let's get into it, the last part of this video. Okay, guys, for the last part of
this video, we have these amazing tactical supply chests that is just amazing, and you get them from the alliance duel if you get that last
milestone. So, you really want to get that, and we're going to open them 100 each time, so that's going to be Yes, let's go.
And what we got? We got nothing really great, some gear stones, and that's it.
Let's do another 100.
Here we go.
And we got a UR shard and some skill badges. It's okay.
Let's do another one.
And what do we get?
Nothing really important, some gear stones. That's it, and we really want to get those 100 UR shards. Let's go.
Uh two, it's okay, three. Do the last one here as well.
And another. So, we got seven UR shards.
That's okayish. And let's open these 1,000 at a time. Here we go. And we got some gear stones as well. Some nice chest and a UR shard.
Let's go. And another thousand. Let's Let's go. And another thousand. Let's see.
I hope I get lucky. Maybe 5K diamonds would be nice. And some UR shards again is also okay cuz it is hero day today.
So that's perfect.
And a curio chest purple.
Let's go. Something Let's give me the Ah, this is also amazing. The gear stones 5K. Three UR shards. Another raven chest. So that's going to help me
also get the raven gear. So that's also pretty nice. And another one.
And some gear stones as well.
And do you really I I like this to really save them up and just open them at the end. And no no diamonds today for me sadly. Here we go. The last one. Some
UR shards. Uh no UR shards. Some gear stones and raven chest and curios. Let's open the curios as well. Here we go.
And these ones we're going to open also.
And let's go to open these explorer chests. You get them from uh expedition missions. These also have curios and a UR shards. So the gear supplies I don't
need to open. We got these expedition chests as well. These also have 100 UR shards. So these are also pretty nice.
We have And we got the Panenka. And uh this is also okayish. Gives you some extra defense and some extra damage to monsters also to the boss. So that's
pretty nice. This is the end of the video. I hope you enjoyed it. And you know what to do. If these guys help you, subscribe to the channel, smash that
like, and I'll see you guys in the next like, and I'll see you guys in the next time.
time. Bye-bye.
YouTube ↗
📝 Text Transcript 5:06 (306 сек) ▼
Full Transcript:
What's up guys, Corpus Gaming here, and today we're talking about a thief hunt event. If you're low on resources, just look at the left and you can see the
stats. It is massive, and this event is the best event if you play it right. And I'm going to show you exactly how you need to play it. You know what to do. If
you like these guys, smash that subscribe, hit that like, and let's get straight into it. So, here we are guys.
This is the map of the thief hunt and what I'm doing right now. I've speeded some things up for you guys cuz else this video is going to take around
20 22 minutes and I don't want you guys to sit here for 22 minutes cuz you need to grind as well. Get these thieves. And what I'm doing here is I'm using one
squad to hit those smaller targets to unlock the boss uh boss thieves. And you just want to keep it out there and just hit them
when you're close by. So, you want to find those clusters with small enemies, send your hero there, and you can just easily pick it off uh
10 of these in uh 2 minutes, and that's going to really speed up your grind. And what else? What do we want to do? We want to hit those bosses. So, we have
one squad purely focusing on hitting your own bosses. You want to do that before the other alliances are starting to notice
your bosses and hitting them. So, you want to keep the rewards for yourself or you want to keep them in your alliance.
If you have a bigger thief boss that you cannot clear, send a course in your alliance and a whale or a stronger guy can maybe help you out uh with clearing
this boss. You don't want to keep it uh in the open for other alliances. You want to keep it inside your own alliance. And what you also want to do
is you want to keep one squad remained in your city to join rallies of uh your allies cuz these are free. You use zero energy uh to join your allies' rallies.
So, it's free uh loot. And that is what you really want. And as you can see on the map, I'm keep I'm always busy, always on that grind,
scouring the map for those clusters, hitting them, and unlocking even more bosses as we go.
And this is basically what you want to do, and this is how you get the most points to buy from the store. I think I'm going to do some off grinding, get
those chests to 200, and then we're going to see the difference between uh doing nothing and really putting some effort into it, maybe an hour, and
that's it, and you will see the difference in the chest, and we're going to do that off uh screen, so I'll be right back.
Uh let's look at what we have collected in the past 1 hour of farming, and we are going to the system, and here we are going to the system, and here we are.
And this is it. Look at it. It's beautiful. Around four almost 4K uh lion beautiful. Around four almost 4K uh lion coins,
250K raven fruits, 66 mil uh grain, 66 mil wood, s- almost 75 mil herbs, a lot of antitoxins, these great chests with basic gear that's going to
help us a lot, speed-ups, some gear supplies, uh another gear supply, some survivor tickets, and a few diamonds. And this is everything I've
collected in uh about an hour of this doing uh behind the screen behind the scene, of course, cuz it was a lot of grinding. And I also have killed some
bosses, so I can rinse and repeat this process. And this is what you want to do for the Thief Hunt event. Let's collect our loot, and here you go. It is
our loot, and here you go. It is beautiful.
And this is how you really progress your account on this event. It's the most important event that there is. And let's get straight into the shop right now.
And here we go.
And we are going to buy some stuff. And what we really want to focus on, you can buy these uh stamina potions. They're very cheap, so that's okay. And we are
going to buy these ones first, the raven essence, around 10K. And I'm going to do this event a little bit more off-screen.
So, I'm going to try and collect even more of these stuff. But, the raven essence are the most important ones to grab straight out of the box. Then, you
want to get these F and chest as well.
They're very cheap and got good rewards.
Let's grab them. We're going to grab these raven chest as well. And with the rest of my resources, I want to get these gear stones.
And what else we can buy from this are the herbs that we will need for the the tier 10 troops. And the this is around a 50 mil herbs
resources, so that's quite a lot. So, you really want to grab that. And as I say, the T fun event is great. And what more to say? If you guys like these
guides and want to help out the channel, subscribe, hit that like, and that's it for today. This is the T fun event.
for today. This is the T fun event. Bye-bye.
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❓ FAQ — Frequently Asked Questions

What is the best F2P team in Last Asylum: Plague?

The canonical F2P squad is Arthur, Daskal, Marlena, Harper, Claire (all Warriors — mono-faction gives +20% HP/ATK/DEF). Arthur is free from day 1; the $1 Marlena top-up is considered the best value in the game. Daskal arrives in the first Era of Revival season (day 120+).

What should I upgrade first?

Sanctuary first, always — it gates every other building and your hero level cap. Then Training Grounds, Barracks, Research Lab, Infirmary, Wall. Keep the Builder’s Hut at Sanctuary level until Sanctuary 15 for free construction speedups.

When does Marlena unlock?

Day 66 for free — or immediately via the $1 starter top-up. Save UR shards so she lands at 8★ right away, then push 10★.

How do I get Cynthia as F2P?

Cynthia arrives via the Wishing Wheel on day 8. Save diamonds from day 1 (skip everything else) — ~11,500 diamonds total, and always spin ×10 (single spins waste tokens).

How do I get antitoxin?

Antitoxin Workshop + Stable production, every building upgrade completion, Falcon Quests (nearly all of them), Covert Ops and Caravan Trade (including plundering others’ ops — up to 5/day), and Blight/Elite Blight hunts (10/20 stamina). Events pay large amounts.

Why did my plunder income drop to almost nothing?

You hit the daily plunder limit: below the limit 100%, from 1× the limit you keep only 15%, from 1.3× only 5%. It resets at 02:00 UTC. The limit scales with Sanctuary level (2.5M at Lv.10–12 up to 30M at Lv.30) and rises immediately when you upgrade Sanctuary. A yellow triangle under your Might shows the status.

What should I buy in the shops?

Sanctuary/Expedition/Alliance shops: Crow Essence and UR Hero Omnifragments first. Honor shop is for gear blueprints only (never epigraph chests there). All shops restock Monday.

Are diamonds worth spending on speedups?

Only the VIP-shop 8h speedups are considered acceptable purchases — and only after hero resources. Community rule: never dump diamonds into speedups over hero wheel events (Cynthia day 8, Joker after day 15).

What faction should I build?

Warriors are the best early game (free Arthur/Harper shards, $1 Marlena). Rangers peak mid game (counter Warriors). Warlocks are the best late game but need heavy long-term investment. Mono-faction (5 heroes of one type) is the current meta because UR epigraphs buff a single faction.

How does Claire SSR→UR conversion work?

Opens on Era Day 8. She lands at 6★ and the run to 10★ costs 1,600 SSR shards (each substage costs 2× the SSR price). There’s a team-buff dip between 6★–9★ — skip it by banking Hall of Honor levels before converting (Lv.60→8★, Lv.100→9★, Lv.160→instant 10★).

How do I redeem gift codes?

In-game: Avatar (top-left) → Settings → Gift Code. iOS or web: log in at the official redemption page with your linked Facebook/Google account, pick server and character, enter the code.

What are the biggest beginner mistakes?

Upgrading everything equally instead of one main squad; judging heroes before high stars (Marlena is the classic late bloomer); splitting Awakening materials across heroes; wasting gems on VIP levels over hero wheels; skipping daily plunder (~27M resources/day); letting stamina cap.

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💬 Join the community ↗ Official Last Asylum: Plague Discord — guides, help and codes first.

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