I think my IM posts will do a better job of describing how I felt fighting him:

PickHut: Fuck RAAM, fuck his mother, fuck his children, fuck his army, and fuck his birds.
blu: fuck rage against anal machines
PickHut: I just spen an hour trying to kill him in insane mode
PickHut: fuck him

Anyway, after about almost two hours of dying, I finally got him with an INSANELY lucky blind shot as he walked towards me. It felt so good defeating him that I sat around for the following cutscene again.

Whew, now I can concentrate on finishing the rest of Lost Planet.