OMG , I was just playin the game today and found the Geia Armor arm parts!!!! It was in Mattrex's place, the lava level... It was in that place where you either have to go down with the power ride armor (PRA) or go through the top. You go down, fight all the enemies, try not to destroy the PRA. So you keep going and going, do NOT take the high route, until u reach a wall. Try to scale the wall. You will see another PRA and a power up capsule. It will contain the Geia Arms. U find out what it does...

If u have found another part, post. Help us find this incredible armor...

LEG and HEAD parts located!!

Legs found in Axle The Red's stage. Take the FALCON ARMOR to the part with the giant hole until u pass that annoying robot plant thing that comes out of the cieling. There u will see 2 walls with spikes. Fly (Jump Then Jump Again In Mid-Air) with the FALCON ARMOR. Be careful of the spikes while trying to get up to the capsule.

Head found in Dark Dizzy's stage. Go past the level normally with anyone EXCEPT Zero, until you're BEFORE Dark Dizzy. You know the hole in the floor in that room? Yeah, u gotta jump into it. Use the F-Laser with tons of skill to hit the door on the side u can't reach.

See this thread.