Looks good. The pixel art isn't exactly gorgeous, but it's far better than I could make. So I can't really talk...
A good platform/action game, Metal Blob Solid, for Linux (There may be a Windows version), has a nice concept, because everyone is a smiley (Well, kind of. They're not smiling. And they have weaponry), which makes the art easier. What I liked about that game, was that it had nice platforming puzzles and not-too-hard enemies, either. The story line wasn't very deep, but it wasn't supposed to be. If you need ideas/a good example of a actiony platformer, I would look at this game.
I really am looking forward to both the engine's and this game's release.