Experience sniping action with many types of rifles, bloody body parts, better collision detection and tons of zombies. Escort the VIP to a safe zone for extraction.
A great combination of zombie shooting and 'match-three' puzzling with an atmospheric (and bloody!) horror theme. Match up and pop the monster heads before they reach the barricade. Use grenades to get out of a tight spot.
As you fight hordes of undead demons exploring the Death Wizard's mysterious castle, you'll find spells that will allow you to use the elemental forces. Good luck!
Another Doom style game called "Flatten Horizon" with top view game play. Plenty of monsters, weapons, blood and doom like action in different perspective.