Sorry I don't know how,,,, but I discovered a way to kick Psycho’s ass without switching controllers, you've just to stay on the ground against him(against the desk just against where he stands for most of time to control room objects),, and watch him playing/controlling those stuff he rejects to you in sequence (bad bug from konami programmers), and that exhausts his mental powers therefore he goes back to that place ,so there is a gap (a small time gap), where he tries to restore his powers, and there you can hit him even three times if you're speedy enough (don't forget to use red radiation or whatever (I don't remember, sorry) to see him), and with that you can beat him, it needs just a lot of time/speed/practice…hehe.
