Summary: Considering games like The Stanley Parable got 88 rating, while much more enjoyable and nice games got lower ratings, I'm thinking this game deserves more. The graphics are not that bad and the action is enjoyable.
Summary: The absurdly low reviews are completely undeserved. Its direct predecessor, Dead Horde, had good concepts, but was fatally flawed. Primal Fears kept the good concepts and fixed the fatal flaws.
Summary: Primal Fears is a huge improvement upon its predecessor Dead Horde. I enjoyed the first game but not without a ton of frustration as it was not optimized to say the least the lag was horrible even on lowest settings. However Primal Fears was a joy to play.