also the garage glitch obe player lays flat point at the door frame of the garage the other people stand inside the house far corner WITHOUT OPENING THE BACK DOOR
all the zombies will work into the house gaterr facing the wall oppisit side to the player at the garage door so all people at the back door can shhot away
but if you open the back door it will not work and at the garage point the gun at the grey bit of the frame