Assassin's Creed cheats and cheat codes for Playstation 3

1,000 Gold (untested):
Hold down R1 and L1 then type in X, X, X, O, O, Triangle, Square.

Completion bonus - Kill anyone:
Complete the game. When the Memory Blocks are played again in Story mode 
you can slay anyone without consequences. 

Beating the Master:
When fighting the Master he will take away your ability to use radar and make 
it difficult to see. This also allows him to hit you once and kill you. Lock on 
to him and use a throwing knife against him. This will take away his power to 
blind you and make him easier to kill.