It's the most immature mature rated game, and it's great.
Presentation: From the get go, you know it's gonna be a fun game. The story is all about revenge and the idea of the game, to kill enemies in newly creative ways is fun.
Gameplay: The shooting mechanics are great and being able to kick or leash enemies in different ways is awesome. There's always fun ways to mix it up.
Graphics: The Unreal Engine looks phenomenal. Though, it should it's from Epic Games and People Can Fly. Violence has never looked so grand.
Sound: Steve Blum's voice is great to hear, Jennifer Hale (of Mass Effect fame) is hilarious as Trishka. Hearing the cursing and dick jokes it hilarious. The gunfire and explosions are amazing.
Lasting Appeal: It's got multiplayer sorta like Horde Mode from Gears of War but it's not just about killing all enemies, it's about getting the allotted amount of points to progress to the next wave. And who knows, maybe you'll play campaign again. Deathmatch is missed.