Kill Goblin Boss
Kill Goblin Necromancer
Kill Goblin Negotiator
Kill Goblin King
Kill Cult Leader
Kill Zombie King
Kill Imp Pyromant
Kill Dark Cleric
Kill Demon Eater
Kill Demon Magician
Kill Demon King
Kill Skeleton King
Have all 4 bubbles on a Unit
Complete Inferno Challenge
Complete Nerco Challenge
Complete Goblin Challenge