I would suggest having a detail level in the quality menu, even on low quality, this runs slow on my PC (250 mghrtz, but runs like 300).
Another suggestion is to use TONS OF AUDIO PORTAL MUSIC.:) Since this is a RPG of Newgrounds, don't you think it should have Newground's user's music?
You can use mine, I'm the self dubbed "Overlord of the Audio Portal", I broke the recird of most consecutive top 5 songs (6 in a row!). Hell, another song of mine is featured this week.
Not to be egotistic, I'll get back to what I was saying. Use the Audio Portal.
Aside from that, perhaps you could let some users send you pictures and .fla's of character you could add into the game, I don't know about you but I'd like to see the main character for Murderer in it (Drawn AznPB).
Please respond, if you want, I can send you some useful .fla's and the murderer character,but one thing, if I give you the murderer character, PLEASE DO NOT let anybody else have it. Murderer is supposed to stay somewhat underground until the game gets finished (exception of my test mods and animations).
I like the battle mode too, but it's not that complex in attacks, only 1 attack with the sword? Hmmm...anyways, the full version should have an easy time reaching the top 10 NG submissions.