I just fired up the PCE version the other day, and finally played it through to the end of level 2.
I gotta say that it's actually pretty good. The controls seem fine, and the graphics and sound are both good. The Save/Load feature is a little crappy, forcing you to exit to the menu before you can load. I guess they did that on purpose though, because otherwise it would feel an awful lot like it had save-states. That kinda thing would totally ruin the challenge in a game like this.
So, pretty good version of the game IMO. I think I'll play it through this week.