Cheat mode:
Make a backup copy of the file before proceeding. Use a text editor to edit the "hitmancontracts.ini" file in the game folder. Add the following lines to the end of the file.

Quote:
EnableCheats 1

Then, enter one of the following case-sensitive codes during game play to activate the corresponding cheat function. Note: These codes are not entered at the console window.

Result - Code:

Slow motion - IOISLO
Bomb - IOIER
Restore health - IOIHITLEIF
Boxing mode - IOIHITALI
Lethal charge - IOILEPOW
Gravity - IOIGRV
Nail Gun mode - IOINGUN
Mega Force mode - IOIPOWER
Boxing mode - IOIHITALI
God mode - IOIRULEZ
Cardboard tube weapon - IOIPENNY

Come back to Life
When your health bar reaches zero the game will enter a black and white death sequence. If you are able to get four consecutive head shots on four different enemies during this sequence you will receive a small amount of health and return to the game.

Second chance:
When you are killed, the screen will turn black and white briefly. Try to shoot four people in the head while this is happening to resume playing with barely any health.

Bonus weapons:
Successfully complete the indicated mission with a "Silent Assassin" rank to unlock the corresponding weapon.

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

All weapons in training level:
Start the training level, then enable the end level code. You will complete it with a "Silent Assassin" rank. Choose the training level again, and all the weapons in the game will be unlocked in the weapons storage.

Unlock Mini Gun
The mini gun is held by a patient who is behind the locked doors of a basement room in Mission 1: Asylum Aftermath. The keycard that unlocks the doors can be found during Mission 9: The Wang Fou Incident. It is called Orthmeyer's Keycard and is on Lee Hong's desk in his office on the second floor of his mansion. After finding the card, finish the mission and save your progress. Quit to the main menu and replay the first mission. Head to the northern section of the map and turn right in the small room with the red flashing sensor on the ceiling. Pass through the west door and dispose of the patient in order to collect the mini gun.

Unlock Weapons
Each weapon is unlocked by completing the mission and achieving the Silent Assassin rating.

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

Item names:
Use one of the following entries with the give code:

weapon_ak47
weapon_aug
weapon_awp
weapon_deagle
weapon_elite
weapon_famas
weapon_fiveseven
weapon_g3sg1
weapon_glock18
weapon_m3
weapon_m4a1
weapon_mac10
weapon_mp5navy
weapon_p228
weapon_p90
weapon_scout
weapon_sg550
weapon_sg552
weapon_tmp
weapon_ump45
weapon_usp