hi all i been modding game i done sounds and i found how get 30x zombie in game they just keep respawning as see in 1 hour got near 50,000 zombie killed, i was cheating as no way u play without trailer put on top level as see they just keep coming i spent hours even on easy they keep respawning, only thing hate rats have turn off health or can't kill them, if want zombie mod find website upload mod, if find a site i need sumone try it with there mate see handle 30x more zombie i wanted more in game so i chance it it bloody hard not using trainer, hope u enjoy it.