Great Game
I really enjoyed this game, but you could have added more. First of all, what's the difference between power and damage? Call me an idiot, but I didn't figure it out. Add more zombies and maybe let the character roam around more. Also, add more weapons. I liked the pistol, but maybe some submachine guns and rifles. It would be fun to be able to get a .45, an Uzi, MP-5, M16, AK-47, Shotgun, RPG, MG 42, Grenades, etc. You could also add more powerful mines and maybe some allies. Make the knife upgradeable and all kinds of stuff. It would keep people playing for hours on end, but you'd need more levels. Great game though.