Unlockable - How to Unlock 
-------------------------------
Alien Hominid     - Have the full game of Alien Hominid HD on your Xbox 360 HDD
Barbarian         - Beat King's Arena
Beekeeper         - Beat the game with The Barbarian 
Black Knight      - Beat the Game with Grey Knight 
Brute             - Beat the game with The Eskimo 
Civilian          - Beat the game with Peasant 
Eskimo            - Complete Icy Arena offline
Fencer            - Beat the game with Mechanic 
Grey Knight       - Defeat the Barbarian Boss
Ninja             - Beat the game with The Red Dragon Knigh
Peasant           - Complete the "Peasant Arena"
Periwinkle Knight - Complete the "Volcano Arena"
Red Dragon Knight - Beat Game With Orange Knight
Royal Guard       - Complete the game as Green Knight
Skeleton          - Complete the game as Red Knight
Thief             - Beat Thieve's Arena