Okay I tried it.
I had no problem having it run but that's because I have the whole XNA3.1 sdk installed on my PC
first impressions:
-change the controls for something more standard than "FD", it took me a lot of time to realize I could play it (A LOT of people will want to play it without a pad, just accept it)
-wow, those graphics are really old school , I mean REAALLLLYY old school.
-I quit because I couldn't make a jump, (it's at the area with TRD8 for password). I hope it's the end of the demo because this jump is fucking impossible
-Good points: there are some really great platforming mechanisms going on here, it was globally very fun, maybe a bit short , but I don't really know