Indeed a really nice game!
I kinda like Devil May Cry, learned about it from a close friend from my class, and this game really reflects its awesomeness. I have a few tips for you to make Part 3 even better;
1. Maybe make it more like a ''level'' with bigger areas, obstacles and such, maybe.
2. Once I use my sword and button-mash at an enemy, they can't attack me in any way and I'm unharmed even after I beat tons of demons down. Maybe you could make it a little more ''fighting'' like in that the demons can defend and knock you back and such? Unless Devil May Cry isn't that of course.
Other than that, it's intensely awesome, at least for a Flash game! I'd like a DMC5 with Encon much better than one with that f*cking fag smokey Twilight Dante we have now! Your game is so much better than that!
Kudos on your game!