Game Center achievements

Complete the following tasks to unlock Apple Game Center achievements.

Achievement How to unlock
Bastard Buy the bastard two handed axe.
Battlefield Beat days 6-10.
Behemoth Defeat the orc behemoth.
Blood red Kill a red orc.
Blue guard Complete the third bonus stage.
Bookworm Complete the first bonus stage.
Eat your brains Kill a zombie.
Forever in your service Save princess Graena.
Home sweet home Beat days 1-5.
Marauder Defeat an orc marauder.
Necromancer Kill a necromancer.
Reclaim the throne Beat days 16-20.
Service with a smirk Complete the fourth bonus stage.
Sexy Orc Complete the second bonus stage.
Twinkle twinkle Beat days 11-15.