What are all the zombocalypse cheat codes

i only know 5 the first one is caled doom it gives you a gun thats called the mpg it shoots lazers the second oneis called pantheon it gives you awepon called the god hand it prety much a light saber thethird one is called wtf it dont know what it does but i know it works well 4 is called ijohnf i think some one just hack it 5 the last one is cool it is called zombified it gives you a zombie head