I played all the way through, and even did the boss twice for both endings. Kinda made me lol on the containment one. :P
I came here from your blog post, so I have to say I'm surprised you weren't able to find a sponsor 2 years ago. The market seems to be drying up on sponsorships, though, so don't feel too bad about it. I'm guessing you probably meant you couldn't find a sponsor willing to pay you more than a few hundred, which is always kinda :/. You just released this though, so I'd definitely encourage you to put adds in it before it spreads too far. You can make some ok money off them and they aren't too intrusive.
The game is pretty fun, and you obviously put a lot into it. :) The powerups and the story kept me playing a lot longer than I normally would have. My only complaint is that the game was a little stretched. It might have been more fun with a few less levels, just so the changes would come a little faster. Other than that, though, I think you should be proud of what you made. It's a lot more in depth than most of my games, haha...