Hilarious but overdone
I got three issues, the two being the main (third just a suggestion):
1) Overdone at the end with the nuke. It was rather annoying, long, and not to mention loud.
2) Pretty short, wish it was longer.
3) Just a suggestion: I think someone else (say Luigi) should have jumped in and finished off the castle easily, would have been funny, but oh well still good anyway.
Despite all that, it was hilarious, especially with the actual *fall* of the castle. Any chance we can see a sequel?