All right, I like what you've done here. The game is challenging, but not TOO frustrating, although some might disagree with me, because the key to winning is learning how to execute each level. The pixel graphics are fine for this motif. Don't know why you chose to omit sound altogether, but the title of the game hints that it was either intentional or you're simply admitting that you never got around to it.
The levels are pretty cool. Some of the challenges require very good recognition and timing. Level 6 is especially clever, forcing the player to process two different positions of the windmill at all times.
What are the green pick-ups for? I see no medal associated with them, and nothing happens when you get them.
There are a few simple design mechanics missing here, unless I missed them:
We need the ability to restart the game. It kind of sucks that the only ways to start over are to either play the game all the way to the end or to reload the whole damned page. This is particularly awful when going for a medal like "Laser Avoider" or "First Gear" only to fail early on. If you don't want to clutter the screen, sick the restart button on the Pause screen, but add one.
As this game offers a few medals for not dying more than a certain amount of times, a death counter somewhere on the screen would be greatly appreciated.
While you're it, a level counter telling what stage we're on would be nice.
What's up with the Campers Medal? I crashed into the wall 11 times on level 2... the first level with a hazard... and it still won't activate. I can see other people have it, though...
The "Gear" medals are strange as well. No matter how fast I completely those levels, nothing happens.
The red squares on level 3 have unfair hit detection. I'm certain they've destroyed me without actually touching me.
Last level: What I would do is to speed the door up a little bit, but also have the red lasers begin flooding the chamber earlier. That way, you cut down on the waiting but leave the difficulty the same. I got quickly annoyed when I had waited long enough for the door to be almost open then got clipped by a square and had to do the entire thing over again. After the third time, I considered quitting.
It's a fun game. It just needs a few basic tweaks. I look forward to your next submission.