Not bad.
I like these kind of games so my first thought was I have to beat it. And I did. I would say the hardest level was level 8, it took me a few trys to get passed it but I did.
There are lots of ways of improving this game. First of all the graphics, the level screens are really dull. Just plain white with a big old red button? Boring. Same goes for the fail screen. Boring. Once you fail you just think ''Oh fuck it'' and click the game off. Next the level game screens are really dull use your imagination and come up with a way of making them look better.
You could also try adding abit more sound into the game. I know that you have the bang noises on the later levels, but I bet most people have give up before getting to there. Even if you just add sounds for when you fail, when you start a new level and when you have completed it makes the game that little more brighter.
The gameplay overall was good, I couldn't find any bugs. A few more levels wouldn't go a miss, and maybe some better obstacles.
It's a nice little game overall. You say you are going to update it? You have submitted itn when it was finished. Or was you looking for some ideas?
Anyway, Nice try!