not being rude, your just bad. I died immediately to the zombies, but after some practice I could easily beat them with skill and drugs from the vending machine.
it depends what you are playing it on , at the time of this post i was playing mobile lol so if you are on pc its probably easier
actually now that i have a pc im going to give this game another shot because like i said i did enjoy it i just think it might need work for mobile