Hitman: Contracts

Stage selection:
Enter the following code at the main menu:
Square, Triangle, Circle, Left, Up, Right, L2, R2.
or
X, Triangle, O, Left, UP, Right, L2, R2

Skip Level and Get Hidden Weapon:
During gameplay enter R2, L2, UP, DOWN, X, L3, O, X, O, X

Weapons:
Finish the following missions and achieve a Silent assasin ratings
to unlock the indicated weapons:

Mission 1: CZ 2000 Dual Pistols
Mission 2: Micro Uzi Dual Submachine Guns
Mission 3: Silverballer Silenced Dual Pistols
Mission 4: Magnum 500 Dual Pistols
Mission 5: Sawed-Off Shotgun Dual
Mission 6: M4 Carbine Silenced Assault Rifle
Mission 7: SG220 .S Dual Pistols
Mission 8: MP5 Silenced Submachine Gun
Mission 9: AK 74 Silenced Assault Rifle
Mission 10: GK 17 Dual Pistols
Mission 11: Micro Uzi Silenced Dual Submachine Guns
Mission 12: PGM Silenced Sniper Rifle

Second chance:
After you killed, the screen - will turn to black and white in a few seconds.
If you can shoot in to head 4 people in this time, the game will resume.

Unlock all weapons in training level + Cardboard Tube weapon:
Begin play on the training level, after turn on the "Level skip" cheat.
You will finish it with a "Silent Assassin" rank.
Select the training stages again, to unlock all weapons in a storage area.