God mode:
Enter Right , Left , Up , Down , A , Right , Left , Right , Left during game play.

All weapons:
Enter Right , Left , Up , Down , A , Up , B , A during game play.

Full health:
Enter Right , Left , Up , Down , A , Up , Down during game play.

Nailgun mode / Toggle gravity:
Enter Right , Left , Up , Down , A , Left, Left during game play.

SMG and 9mm Pistol SD:
Enter Right , Left , Up , Down , A , Up , Right, Right during game play.

Slow motion:
Enter Right , Left , Up , Down , A , Up , Left during game play.

Punch mode:
Enter Right , Left , Up , Down , A , Up, Up during game play.

Megaforce mode:
Enter Right , Left , Up , Down , A , Right, Right during game play.

Unlockables

Create a Level Select Menu

Edit hitman2.ini and change "DefaultScene=AllLevels/logos.gms" to "DefaultScene=AllLevels/levelmenu.gms”