Like keksci said, it's just the Stencyl Demo Game, only with new graphics and new levels.
Because of the new graphics a half star but please try at least to make an own game.
You can make with Stencyl great games with a little knowledge but you have at least to learn about it.

Search for "Tower Defense Tutorial Stencyl pulysher", this tutorial helped me a lot to understand the basics of Stencyl.

Hah, redesigning the Stencyl sample game a little?

First off, please don't interpret the 0 as negative. I don't think unfinished games/demos/betas belong in the portal. It'd be better to upload it to your dumping grounds and post a link on the bbs asking for feedback.

The third level freezes up when the ball gets in the white tiles on the left. It still lets me show/hide the profiler. But nothing else works.

All in all, I think the 'remove blocks to get item to goal' genre has been nearly done to death. I'd suggest adding some kind of mechanic that makes your game a little more original. Maybe you have to time removing the blocks so the ball doesn't get hit by lasers.

I think it would look better if the ball rolled rather than gliding.

You have quite a memory leak going on. The FPS has stayed at an average of 60 +/- 1.5. Though the memory started at ~18MB. It has gone up to ~72MB. The garbage collection does get called occasionally, but the amount of memory used after GC rises each time.

I think you should include a mute button.

Depending on what you do with the game, I think the potential to be a fun game is there. When you want feedback on the next version I'd highly recommend uploading it to http://www.newgrounds.com/dump and then post in the Flash forum asking for feedback.