need some help with nightmare

[Cascadia]

I am having trouble with the nightmare portion of the TMNT 3 game. It is rather difficult. If anyone has any suggestions, please provide them and they are much appreciated.

[gobo]

You could always use the cheat codes. When fighting The Shredder in Don's Nightmare, the quickest way to destroy him is to go fire off the cannon thingamajig a few times.

[Cascadia]

let's see I am done with Raph's, halfway done through Mikey's, have not started on Leo's or the final nightmare. As for Don's, I am on the 3rd level.