Cheat List:
9999 Ammo: MOUSE B3, SPACEBAR, TAB, TAB, F, X
9999K Arrowheads: SPACEBAR, MOUSE B3, MOUSE B3, E, F, MOUSE B1 (left mouse button)
9999 Lives: TAB, E, E, X, SPACEBAR, MOUSE B3 (scroll wheel button)
All Powers: X, X, F, E, TAB, F
All Powers Upgraded: TAB, MOUSE B3, TAB, E, X, E
Global Items: MOUSE B3, X, E, E, L3, TAB, F