Well here we go again, cheats for Red Faction II ! ;)

Go to Extras -> Cheats and enter the following combinations to get
the desired results. After that click on the star to mark them and
ofcourse use them in the game.

Super Health
xxywywz

Unlimited Ammo
ywxzyzxw

Unlimited Grenades
zxzxzxzx

Wacky Deaths
wwwwwwww

Directors Cut
yxzwzxyw

Bouncy Grenades
zzzzzzzz

Zombie Walk
xxxxxxxx

Fire Bullets
yyyyyyyy

Rapid Rails
zyzyxxww

Instagib Ammo
xxxxyzxx

Instagib Explosions
wzxywzxy

Bullet Gibs
zzzzwxzz

And after you entered all those nice cheats you get the final 3 :p

Unlock Everything
wwxxyzyz

Unlock All Cheats
yzwzyxwx

Unlock All Levels
zyxwyzxx

Happy cheating!

/Team Goldstrike