Kill 10 Goblins
Be killed by the tutorial instructor
Explore the whole castle in endless mode
Kill 100 Goblins
Kill 1,000 Goblins
Kill 10,000 Goblins
Reach wave 4 on maximum difficulty
Reach wave 10 in endless mode
Kill an enemy archer with his own arrow
Reach wave 9 without using any spells
Land a bullseye shot during the Tutorial
Reach wave 4 using enchantments on every arrow
Make excessive use of the explosive arrow enchantment
Unlock 6 additional spells
Kill an archer with the Overlords Catapult