Die Hard 1:50 Grenades

Pause the game and hold R2 button.Then press Right,Square, down,Circle.Gives you 50 standard grenades to throw arond

In the first episode of the game:

Pause the game, Hold down R2 then press:
R,U,D,D,square,R.
This allows you to have infinite ammo for your gun. If you put in this cheat more than once, it will give you the next weapon in the inventory.

Die Hard:

stick man mode:Pause the game and hold R2, then press triangle 10 times and right 4 times. dead enemies float up:Pause the game and hold R2,then press down,square,triangle and down