WADDAWIMP:   Invulnerability

SUCKPHOTON:  All weapons

LEADEATERS:  All ammo

RAINCOAT:    All shields

IWANTITALL:  All weapons, ammo and shields

YEAHBABY:    Max ammo and shields

SPUTNIK:     Acces to all levels

GHOSTRIDER:  Collide toggle

FRAMEHOLIO:  Show framerate
  

Thanks to Revolution reader Ruudvolkersfromzwolle!