Finish level "Entrance" (1)
Finish level "Gates" (2)
Finish level "Bridge" (3)
Finish level "The wall" (4)
Finish level "Runway" (5)
Finish level "Graveyard" (6)
Finish level "Catacombs" (7)
Finish level "The Maze" (8)
Finish level "Inner walls" (9)
Finish level "Tower" (10)
Kill 100 undead enemies
Kill 500 undead enemies
Kill 1000 undead enemies
Freeze 100 enemies
Survive for more than 10 waves in the Horde mode
Survive for more than 20 waves in the Horde mode
Survive for more than 30 waves in the Horde mode
Take an arrow fired by the enemy in mid-air
Kill 3 enemies with a single explosive
Cut off the limbs of an enemy while still alive
Ice explosion
Kill an enemy at 30m
Kill 10 crows
Get an archer to kill another enemy
Achieve all the achievements