Activision Code:
EC8383AC 144828E4

Extra Silver:
4CE0D13C 1456B00C

Endless Credits
4CE0AEFC 1456E79D

Endless Health Player 1:
4CE0B358 1456E79E

Endless Ammo Player 1:
4CE0B394 1456E79D

Endless Health Player 2:
4CE0B4A0 1456E79E

Endless Ammo Player 2:
4CE0B4DC 1456E79D