i would like them to make the ai's allot harder it was way to easy all you have to do is run through there shooting people u dont even have to hise behind the sand bags its just way to easy just make them move and have better guns and theres no point of buying more units just for a bigger weapon and when u upgrade you should get the choice to upgrade jump or speed. otherwise 3/5
its good but how bout we unlock somthing when we rank like money then there would actually be a point and can u do a story line cause it gets really boring after a while 3/5