Just a remake of Nazi Zombies, woulda been better if there was teamates controlled by AI but not complete idiots. And you should be able to move when getting attacked.
It's a REALLY good game, but maybe you could tweak it abit? In Act 4, the Team's AI is RUBBISH! They don't even make it to the demon! Who is overpowered, I help them as much as I can, even kill most of the enemies for them and they still die almost straight away!!