Rats, Bats, and Bones achievements

Reach act II.

Rack up 50 kills with a single trap.

Kill 20,000 monsters.

Kill a monster right next to your crystal.

Kill 5,000 monsters.

Win a game with 1 crystal health remaining.

Deal 1000 damage with a single trap.

Unlock all trap upgrades.

Beat the final map on any difficulty.

Reach act III.

Kill a royal guard without breaking its armor.

Deal 20 or more damage with a single critical hit.