Good Concept, but the flash lacks some what.
I liked it alot. Got a thing for evil VS good stuff ^^
Although it have some downsides...
First of all is the static and unfinished movements.
Dont just use one template arm and move it around like a flying arm.
Draw smooth movements and take time to finish it properly.
Second is using more special effects. The fight seems quite boring and quite predictable. Make it intresting, more smooth movement.
Third is the "Godlike" Main character, dont make him so powerfull so he can kill evrything. We need to develop feelings for them :P so make him bleed some, make it a fight wich he deserved to win, not just pusing "Kill" button.
Hope it helps ^^
I don't review flashes I dont like so ill give you a good score for evryhing that I like. Hope you improve and make more :D
LOVE from Essassin!