Secret dungeon! (Des)

Secret dungeon!

You uncovered the entrance of a secret dungeon inside your barrier. Explore it and kill the boss to receive great rewards.

Quest 1: lost travelers.

Find the three lost travelers and gain one special item and 500xp to share among the group for each of them that you find.

Quest 2: bounty hunter

Clear the dungeon of all enemies. A counter will appear once the remaining number reaches 20.

15000$

2000xp to share

Quest 3: monster slayer

Kill the boss and take his treasure.

One treasure chest and one precious item.

2000 xp to share

You will accept these quests by entering the dungeon.

Reference
Unlocked in Chapter 181 "Adventure Time"