Wow, I'm going to sound kind of like a jerk in comparison to the others.
As far as what I think of the mod... I guess just "unfinished" which is O.K. cause it is unfinished.
None of Duncan's and Alita's attacks really feel straightforward. I mean, that's not to say they aren't REALLY cool, but still... For some strange reason, you opted out the ability to attack up and down. It's your mod and you can do what you want, and you might be going somewhere else with it, but it seems kind of strange to omit that. Also as has already been stated, Duncan's secondary kinda breaks the boss battles for me, Lyron was easy, and the phoenix-thing took like 30 seconds, so you might want to change that. It took me a bit to figure out Lyron's axe thing, once I did, it was actually really nice. The boomerang was pretty fun to play around with, and I was impressed you fit more than two characters, so you obviously did some cool assembly work.
Now the music. Oh the music. I really shouldn't talk since I can't make org's for crud, and someone is helping me with mine, but the music, although good, felt like it was grating at my ears. After a while, it kind of hurt to listen to. I know that sounds kind of mean, but it did feel a little grating. The graphics are pretty bright and all in all nice setting and mood. As far as assembly goes, you hit it out of the park. Very nice, very well done. It's an ambitious project and if I were to take it JUST by the current demo, I would call it "broken" and "unfinished". But it's not finished, so thats not fair of me. Generally really fun, had some tough spots where things constantly pushed me off, but the important thing is that I was enjoying the experience and had FUN. A lot of times a mod can have a lot of polish, but just isn't "fun". This felt unpolished, but was one of the more fun mods I've played, through the problems it has, it has a certain charm to it.