i think the infect rate should be larger n i also think tha zombies should just last till thare killed i think its stupid that they just die after alil bit its gay i think u shouldnt have to upgrade them they should just live till thay get shot and or killed!
i hate the double click to infect u get a good group n u hit it n then they all run away n then u got to hit agin t infect n u only get acouple of ppl wich is extremley iratating