Cold War Codes -

Invincibility:
Press to pause your game, then press , , , , . The screen will flash green to confirm correct code entry. Repeat the code to disable its effect.

All items, gadgets, and tech points:
Press to pause your game, then press , , , , . The screen will flash green to confirm correct code entry.

Level skip:
Press to pause your game, then press , , , , . The screen will flash green to confirm correct code entry.