i no its an old game but i bought it ages ago when i got 1nsane. ive been play of for a while and im stuck, keep gettin killed and i cant seem to get teh invinciblility cheat to work. how do you get it to work. ive tried it loads of time but bang im still dyin (last time i got hit my a bluddy sniper). pleeeeeeeeeeeeeeeeeeeeeeeeeeeeeez help!!!