Complete the indicated task to unlock the achievement.

Achievement	How to unlock
Activate a statue	Activate a statue.
Arena fighter	Play in the Arena room.
Become invisible	Become invisible.
Become level 10	Become level 10.
Buy a titanium shield	Buy a titanium shield.
Drink from the well	Drink from the well.
Kill a cyclops	Kill a cyclops.
Kill a minotaur	Kill a minotaur.
Lens of secret	Get the "Lens of secret".
Maximise dungeon difficulty	Maximise dungeon difficulty.
Reach level 15	Reach dungeon level 15.
Save a lost soul	Save a lost soul.
Slay 5000 monsters	Slay 5000 monsters.
Unlocked Barbarian	Unlocked Barbarian character.
Upgrade the dungeon	Upgrade the difficulty of the dungeon.