Faster Credits:
When you see the names of the Naughty Dog staff disappear off the screen, hold X or Circle. The credits will speed up and be completed in a few seconds.

Infinite Health:
During gameplay, pause and press Up, Left, Left, Down, Right, X, Triangle and you'll be invincible.

The Strong Survive:
While punching, jump and you will do an uppercut. Then do a spin kick or a dive for a very powerful attack.