Hey, quite good
I must say, for your first movie I was expected much less. But this was rather good, both for a first movie and a sprite movie. However, the addition of music would have made it so much better, despite you saying that it would conflict with the sound effects, I suggest you check out some of ParagonX9's work in the audio portal, he has some good sonic fighting songs. Also, working on the background some wouldn't hurt, having just a blue screen is rather all. Anyways, keep it up! I look forward to more from you.