Tomb Raider

Level Skip:
Go to the last page of your passport and press Z, Y, Z, Y, X, X, X, START and then press C.

All The Weapons:
Go to the inventory screen and press X, Y, X, Y, Z, Z, Z, Z, Y, X, X, X, START. You will hear a sound. Now use the level skip code. In the next level, you will have all the guns.