@Theou: If you don't do a key config, I will. I totally hate not having that option personally. The current configuration in the demo is just my preference and doesn't reflect what will be in the final game. (How corporate sounding of me! =P) I didn't know Z & X caused an I/O error. That isn't the case wit A & Z is it?
@Claimh: I might just use an alternate control scheme in future demos. It'll cover all the bases.
@X: I wouldn't worry about the enemies. TheouAegis is still not done with them. And as for that wierd control issue, I have experienced it myself. However, for me it doesn't always happen, so I'm wondering if it's just a keyboard thing. At any rate, the next demo will be on the next version of Theou's engine which he promises is a marked improvement and feels even more accurate to the originals.
That said, I'm working on the rest of the graphics for stage 1 at the moment and mapping out Harmony of Despair's stage 10 at the moment while I await the nect version of the engine. Stay tuned guys! ^___^