An interesting concept. I liked how the psychiatrist was an Uberkid. The action was pretty badass, though I think the doctor's death could have been more disturbing if it was slightly more realistic. The animation was pretty choppy sometimes, but it really shone other times and I really liked the way he killed that one guy with his gun. I wish he shot someone with it afterwards though.
Another thing that could have been better were the psychiatrist's questions. It would have been cool if you alluded to the school incident being the cause of Pico(njo)'s madness.
Overall a cool action scene, but could have been better in terms of plot.