I really did like this game. What I found to be hard was well, everything. I'm always impressed at how games can be difficult even if they are not that complicated. This certainly fit the bill. It was pretty much unbeatable after the first level. The timer didn't help.
In fact, I think it made it worse. Why has no one made that joke before? While basic, it still got what it was supposed to do. I recall games like this. While not too memorable, still good.