Unstoppable Object, Meet Immovable Wall!(Talon)

Achievement Unlocked! "Unstoppable Object, Meet Immovable Wall!"

You beat a Dungeon without taking a single point of damage. Even though you kind of cheated.

+100 EXP

+5 Endurance

-3 Endurance for doing it on super-easy mode. Seriously?

Reference
Unlocked in Chapter 49 "Heidi R. Kling"