Mark Of Kri The cheats and cheat codes for Playstation 2

Go to the title screen where you see "Press Start" and 
enter the follwoing cheats:

Unlock Invincible mode in Cheats option
Press Square, Circle, X, Square, Circle, Square, X, Circle, X, Square, 
Circle, X. If the code is accepted Rau should say "Whaahu".

Maximum health
Press X(4), Square(4), Circle(4).

Harder mode:
Press X, Circle, Square(2), X, Square, Circle(2), X, Circle(2), X.

Weaker mode:
Press X, Circle(2), Square, X, Square(2), Circle.

Turn OFF arena AI
Press X, Circle(3), X, Square(3), X, Circle, Square, X.

Unlimited arrows
Press X, Circle, Square(2), X, Square, Circle(2), X, Square(2), X

Weapon select option at Sage
Find each Tuku on every levels

Unlock Arenas
Finish all of the challenges in a stage to unlock that stage's arena.

Unlock bonus clothes and images
Finish the arenas by completing all challenges in time attack and 
body count mode also.