Last Asylum Plague Pandemic Experience

Published: 2026-10-27

Pandemic Experience is a challenge event with Personal Challenges and an Alliance Challenge. You summon Hell Nurses from the lowest level and work upward through 11 difficulties, and your alliance Leader or Officers summon an Alliance Boss once enough doctors have cleared the matching difficulty. Clearing a difficulty unlocks the next one for the next event.

How the Event Works

The event runs two tracks at the same time. The Personal Challenge is yours alone, though you can call for help. The Alliance Challenge belongs to the whole alliance and depends on how many members have already cleared their personal difficulty. You need Territory Lv.8 to take part.

Both tracks use rallies. A Nurse you cannot beat alone can be taken down by a rally that alliance members join, and the Alliance Boss is a rally fight by design. If you have not used rallies yet, the alliance page covers roles, and the squads page covers lineups and marches.

Personal Challenges

You may select any difficulty you have unlocked. Difficulty 1 is open by default, and once you pick a difficulty, you cannot change it during the event. Start with the lowest Nurse level. After you defeat a Nurse, you can summon a higher-level one. Defeat the required number of Nurses to claim the milestone rewards, and defeat a Boss at a certain level to give a reward to all alliance members.

There are 11 difficulties. The first 9 contain 30 Hell Nurse levels each, and difficulties 10 and 11 contain 10 levels each. The recommended Might in the table below is the game's own guide for each difficulty.

Hell Nurse Rewards

Every Hell Nurse level has its own reward. The table shows level 1 and the last level of each difficulty. Raven Fruit stays near 1,000 to 1,920, while the Antitoxin payout grows from 36,000 to 4,093,000. You can read how Raven Fruit is used on the Raven page.

Milestone Rewards

Besides the reward of each Nurse, the game pays a milestone reward when you reach set levels. Difficulties 1 to 9 pay at levels 10, 15, 20, 25 and 30. The short difficulties pay at levels 3, 6 and 10. The table lists each one in full, so you can see which shards, Raven items and Diamonds are waiting at the end of a difficulty.

Alliance Challenge

The Leader or Officers summon the Alliance Boss. The Boss must be fought in order, and only one Boss can be summoned at a time. Before a Boss can be summoned, a set number of doctors must clear the matching difficulty in their Personal Challenges. Once the event begins, the member list is locked, and the game checks the Personal Challenge status of the doctors on that list.

A summoned Boss stays for 30 minutes, and doctors who defeat it within that time earn rewards. Each Boss gives 2 tries. If the first try fails, there is one more chance. After a second failure, the current and all later Bosses are closed to you, so wait until the alliance is ready. Alliance Boss rewards can be claimed once.

Pandemic Experience Strategy

• Choose a difficulty that your squad can clear completely. Clearing it unlocks the next one for the next event, and you cannot switch after choosing.
• Match your squad to the recommended Might in the table, and build it with the best team section and gear.
• Start a rally when a Nurse is too strong, so your soldiers survive and the alliance members share the rewards.
• Finish the personal levels early. The Alliance Boss unlocks only after enough doctors have cleared them.
• Plan each Boss before you summon it, because the Boss lasts 30 minutes and two failed tries close the current and later Bosses.

Pandemic Experience Video

The video walks through picking a difficulty, the suggested Might warning and the common mistakes players make in their challenge runs.

Frequently Asked Questions

Read Next

• Event hub and schedules
• Thief Hunt guide
• Cheese Trap guide
• Alliance roles and ranks
• Raven upgrades
• Resources and Antitoxin