Agile

Omg please add a delay for walljumps like maybe 1 second before falling, because wallumping with holding down shift, pressing spacebar, going against a wall, violently turning your mouse to hurry up and go the other direction, and making it doesnt sound as easy as it looks.

This tries so hard to be Mirror's Edge. And surprisingly, it actually does quite well. The jumps are hard enough to be a challenge without actually being annoying; the walljumping mechanic works pretty well, although I'd prefer a little more hangtime when I touch a wall; the controls feel nicely firm; the graphics, though basic, are nice and clear. Yeah.

Priority 1: Fix shift to WALK. Or do the toggle thing.
Priority 2: Next update, DO tell people ALL the controls in the first level. For those who quit early, R restarts, and red orbs appear later as checkpoints.

Do those two things, add some backgrounds and textures, maybe spice it up with a small dose of plot, and you've got a solid little game here.

This was so fun, being all ninja and stuff. Though some suggestions would be to ALWAYS run, and sift was walking or something.

Got it:
Mouse - right hand;
Walk + jump - left hand;
run toggle - spring-loaded wood clamp AKA clothespin

Shift should be a toggle button to walk/run. Background music and some nice textures would be good too. I found level 3 too annoying. Checkpoints maybe? BTW, why would I want to collect green spheres? There should be some story, and score. Good start, but need more details.