If you want to get some coins go to Jimmy's Lab.Go to the left side of it.Freeze the door with the freeze gloves than smash it open with the star flinger thingy. Keep going left and turn the wheel.Keep going left and be Jimmy and use that move where he can go foward and smash all the ghosts to the left and right on the button thing. Than get all the coins.
To defeat Plankton you have to doge the things he shoots.When he brings an army of ghosts don't fight them let the other three defeat them.Than when he is on the ground and he is only facing one direction move to the other side.Than jump when he lands and be spongebob and throw a bubble bomb at him.Than when he is on the ground be timmy and shoot stars at him. Repeat this until you beat him.
Vlad:To defeat Vlad doge his attacks and than when he is in the spot where he has the sheild araund him and he is blasting red blasts everywhere then be Danny and go into Danny's dad.Than go to vlad and start punching him.At first it wont hurt him but keep doing it and he will get hurt.Repeat this until you beat him.