Wallhack lets you see through walls, used with chams.
Chams lets you see anyone in colors (like thermal goggles).
No Spread is what it says. The bullets don't spread, going into one straight line. Won't work far ranges with shotgun though.
No recoil takes away the recoil, or when the gun jumps back whenever you fire.
Fullbright makes everything bright. (I think)
No fog takes away fog. Best in Snow Valley
Crosshair has a crosshair in the middle of your screen, no matter what, even when using a scope.