So I reallllly like the idea of this game. It is simple, fun, addictive and the controls are pretty much there. However, the level design left a little bit to be desired. I beat the first three levels without using the time related features and then on the fourth level, I discovered them. In fact, that's when I started to really like the game.

If the levels introduced those features earlier then it would have been more fun overall.
Also, I couldn't beat the fourth level! The hallways are way too thin and leave too little room for error, IMO!

Great work!