I like your game, it reminds me of Vector, and I ended up playing it for like an hour xd. I think the level design is pretty good, at first I thought it was too simple, but the more I played it, the more I realized how many small things you can do to optimize your runs. The only things that I would add are: more levels (thats very obvious, I think); make it so you can hold the run to run button before the game starts, as it is right now, you have to hold it after the game starts so your character runs, and that's not ideal, I think. Also, new obstacles and mechanics, but I don't think you have to do anything fancy, I like the simplicity, but that's just me.