omg this one kicks ass!
to kill zombies read below ---
How to kill NORMAL ONES - click superfast. target body first, followed by head
How to kill THOSE WITH GUNS - shoot off their both arms, then the body. Grab the health kits if they drop one!
How to kill BATS - shoot off a wing. (the bat feature made me laugh!)
well, it was strange when the zombies have their own helicopters and UFOs...?! followed by a flying house as the final boss....?!!!! LOL