Excellent gunplay, constant ultraviolence, and a masterfully composed soundtrack that perfectly complements the guns and gore. The story is predictably shallow, but plot is not the reason one would decide to play this game. Multiple guns sharing the same ammo type discourages true experimentation, and among the games many weapon upgrade trees there are some that are strictly better than others. Additionally, I think the game could've used an extra enemy type or two during the final few missions, but none of this is enough to bring down one of the most fun shooters I've ever played.