Very excellent !
Super cool characters, tight animation, a very groovy track, and a compelling action sequence - What more does anybody need?
The only drawbacks for me are:
01- Despite watching it several times, I really don't understand the specifics regarding the ultimate demise of the nemesis. I figure the bots just located the main power-source and set off a chain reaction - but this is only based my understanding of cliches in the genre and not the exposition of the piece.
02- I'd really like to see you work harder on some of the explosions. They are a bit to cartoony and don't have enough weight/balance. They're more like poofs than explosions.
Other than that I really love it!