Psychopath fight Chef Antoine. Skip to 2:09 for fight.
I highly recommend learning the Dodge Roll skill so you can easily dodge his attacks. Run around until he runs away to eat food so you can attack. Be patient and don't get too cocky (like I did a few times).
Weapon I used: Knife Gloves (Bowie Knife + Boxing Gloves)
Fight scene song: Celldweller - Own Little World
0:00 Intro
0:06 Cutscene
2:09 Boss Fight
3:40 End cutscene
