Hitman 2 Cheats

Right trigger 4 times.

Enter the nailgun mode cheat  and make sure your out side and equip the
shotgun (this ONLY works with the SHOTGUN) this is best done on the roof
level shoot a guard in the direction of  no buildings and they will fly
away to the sky or if on the roof off the side an the fall to their
deaths.

All codes start with r2,l2,up,down. Just add the following:
Level select:
square,triangle,circle(main menu)
God mode:
x,r2,l2,r1,l1
All weapons:
x,up,square,x
Full heal:
x,up,down
Slow mo:
x,up,l2
Nailgun mode:
x,l1,l1
Ali mode:
x,up,up
Low gravity:
x,l2,l2
Lethal charge:
x,r1,r1
Bomb mode:
x,up,l1
Megaforce:
x,r2,r2

Earn a Silent Assasin ranking on the St. Petersburg missions. Once you complete "Invitation to a Party", you unlock the M4.