Works nice, but has a few issues. If you die somewhere on the right you'll have to wait way too long before the view arrives at the left again. The background tiles sometimes would not match up and show seams. The scroll seems to slow, it's not nice if you fall out the view and die. Still, a very solid start. Needs more levels ;)
The alignment of the tiles are due to me moving the tiles 0.5px every frame instead of 1px every 2'nd frame. =) Also, using wasd for scrolling can make life easier. =)
Crits: Unresponsive scrolling brings the sadness. Also the music didn't really seem to fit, and the theme wasn't used very well.
Some decent platformer action in there though, once I read how to control the screen scrolling, and the graphics are fine. I look forward to seeing what you can do when you're not having to learn new tech. :)
Unfortunately under windows xp I get: .NET framework initialization error, Unable to find a version of the runtime to run this application. I have .NET installed as far as I can tell, so I'm not sure what the source of the problem is.
Still, a very solid start. Needs more levels ;)