I would rate this higher, but my major complaint on one of the levels, when hit by the smoke of the marijuana has to be the reload time. It. Is. Poor. Every time I get high (game wise) the re load time is slowed down to a crawl, now I do realize that it is meant for realism, but Pothead zombies one did not have this problem. The trouble with ammo isn't the problem, I'm fine with it, and I love the lobster pistol by the way, but it the reload time were a little faster, I probably would have beaten wave 12 by now. 3.5 stars from me.
By the way, Pothead Zombies was awesome.