This has come along well!
I have to say, since writing my review of the first movie, I have totally come around =). The series has deviated into a story of its own and is doing one hell of a job telling it. The comedy of these later episodes have been quite amusing and there are some really nice animation sequences in the fight scenes. Besides the obviously traced graphics (which were loosely adapted into your art style), I really enjoy the simple look of the series.
When the inevitable Episode 5 comes out, I'm sure it will follow suit of the rest and one-up all the past episodes!
Bravo!