a key selection would be nice, here in germany it is always bad to play games with this key-config, we have our "z" where you have the "y", so maybe an additional "A,S,D" key config would help. i alway rate games one star less than they earn, if there is such an "consumer-unfriendly" key config. , so 4/5*
nice and entertaining, well graphics. a bit more conquest could be nice. also inventory screen is useless, just make a buton for automap, thats ist.
BTW: LABRAT9 you complained about needing same ammonut of hits to kill a zombie, no matter which level you got, .. uhm, do you ever read the stats upgrades when leveling up, there is nothing said about doing 8% more damage, just 8% faster attack rate.. so stil 5 hits needed.