I'm stuck on the last battle where you have to beat all the switches.?

I got stuck there too. There is one in every corner of the room, one in the room that you can see when you are on the ground, and one under the dock. That one is the hardest to get to. Order I got them: The one in the room, The fours corners, and then under the dock. It has been a real long time sence I played. It could be only two of the concers have one if that is the case things just got easier for you. Fighting Doc. Oc. This is a real challenge. It took me forever to figure it out. So I will tell you how to do it. When he goes to hit you with it tenicoles (spelling) it is either doge and web them or just web it. Then go in spider relex mode and start attacking. By going into and out of spider relex mode (leaving only to web him) you cause more damage. (Spider relex mode makes it so you get more attacks off at one time and the attacks are more powerful.)

I hope this can be of help to you.