Its hard for me to comment too much on this one because I could not get past the first jump. I assume your supposed to jump, throw then teleport? I was not able to do so. I will say that I think IJKL are poor choices for ability controls in a platformer. Something like "Space to jump", "left click to throw if holding", "Left click to push if not holding" and "right click to teleport" would have likely been much smoother. But hard to say without being able play past the 3rd screen. I think you might have a really fun game here once some things are smoothed out.