Well, after clearing the whole leaderboard (I am DBF) and having killed over 880 people for it, I would say I'm ready to leave a review here.
It's a pretty simple, yet fun game. Controls fine, the gameplay is fine. I like the whole "sinister" atmosphere, as well as the voice. It makes me feel like the protagonist isn't a psychopath, but a person who suffers from psychosis or a mental illness similar to it. The fact that the appearance, name, age, and religion of the character changes every playthrough is a nice touch, and it shows that anybody could be a shooter, not following any kind of stereotypes. The game becomes more intense as you get more points since the enemies begin shooting faster, making it more difficult not getting hit. I also like the "bleeding out" effect, due to the fact that it puts you into a position where you know you're probably going to die, your time is running out, so you must begin killing faster. I don't really know what to make of the guy in the red shirt that follows you around (i know the game is a parody of "Berserk", just don't know what to make of him. Is he the principal, the shooter's conscience?)
The only problem is the fact that once you are about to get to 10K points, the game freezes, forcing you to end the game by allowing yourself to be captured, getting killed by the cops, or commit suicide. Still, from a realistic point of view, that would be the eventual end anyway.
All in all, great game!