Solid blend of effects and attacks that made what was a rather over the top sprite battle fairly enjoyable. Soundtrack was a bit of a mixed bag, and seemed to rely a little too heavy on just using heavy metal music despite it rarely fitting with the themes of the battle. If I could offer a suggestion it would be to actually tone down the length of the fights to allow for a stronger experience, and to make sure that attacks are being treated as if they matter.
It seemed unusual that so much more time was spent fighting the three underlings than what was spent on the battle with Akuma, and after seeing characters take hundreds of hits it's hard to judge if anyone is really having an impact at all until a character falls down for good. If you allow time for characters to stagger, pause for breath, or even a line or two of dialogue after an attack/super move/combo/etc. it better conveys the effect that it had in the overall battle. Better yet, if a character only takes a dozen or so hits and maybe only one or two super moves then each hits carries a lot more meaning and does a better job showing who has the upper hand rather than having each character land giant combos and supers on their opponents with regular success.
Still, an enjoyable watch all the same. Keep up the good work.