No special weapon...dangit.
Great game. My favorite weapons were the hunting rifle and the last gun. For a while, the revolver is one of the best. The shotgun and sawed-of shotgun were a letdown. The chainsaw is good if the enemys actually get close in groups. I didn't like the uzi or AK-47 much either.
Great game though. I would like to see a special weapon unlocked for beating the game though. Something fast, strong, and infinite amo.