Castle Oberot

Having trouble getting beyond the left side of Oberot. I've gotten past the holes and met Cat but can't get past the locked door on the bottom and a few force fields.

Help!

The locked door on the bottom is opened by doing the switches before you get there. I'm not sure where the walls of force you're having trouble with are. The one I think you're having a problem with is controlled by a switch if you fall down a hole. You have to explore thoroughly.