urm which bit ?
the first bit you'll need cat nip from floor 40 of via infinatum in bevelle...if u meet and gaurdian beasts or omega weopons then get on yellow health and use triggger happy level three (same for dark aeons or the drain ability...for that bit just folllow the path and work ur way there).
Use the muisical notes to avoid a fight...play the keyboard in the right order and the security will be disabled. (for elctrical thing wait for the moment...for red lasers head to the left (?) and hold jump.climb a tower.
you should meet gippal and nooj (i think thats the order of things) then its time for the big fight.
For furtheir info plz tell me exactly were you are and i'll guide you from their. (to start of going to the far plane talk to brotheir and choose holes to jump in...be careful the dark aeons are in "the road to the farplane"