QUOTE(Superlatanium @ Oct 6 2015, 07:18)

Certainly doable, though you do need a basic standard of equipment first. Silence is very helpful as well (many of the bosses only do damage with their special attacks, and do barely any damage at all with standard attacks). Weaken and Sleep too, if absolutely necessary. The most important thing is to not run out of Spirit.
I probably need to train higher deprecating proficiency and expand my battle item slots before attempting again. When i tried at 250, i think i had skilled better silence to 3 and mind control to 3 too. Maybe a bit of bad luck on my side, my silences and sleep failed to work.