This game is all about kicking some ass and blowing things up and not much else, but that's not necessarily a bad thing.
The controls are super easy to get the hang of, but the camera and lock on functions seem broken or at least not completed. I mean, you don't really need to lock on to anyone at all since you can blast holy vengeance through anything you're facing, including any and all pillars or walls blocking your aim. A lot of the game is lacking music, sadly, but most of what you'll hear are muffled Virtua Cop sounding voice overs and lots and lots of gunshots and explosions. The boss music, however, is crazy and is guaranteed to pump you up. By the time you see "Kick Their Ass!!" again, you've got that evil grin going.
My main problem with the game besides the lockon/camera? Devil Kings with guns. You're sure to get bored of the run, blast everything that exists, run, blast everything that exists formula eventually and will put the game down for a bit. But I doubt this game was meant to be taken more seriously and I personally think it should be treated as a guilty pleasure gaming experience where you can just cut through loads of enemies whenever you're feeling the urge to blow stuff up instead of writing some MySpace poetry to Fort Minor.