It took a while to get the controls down but once you have the hang of it the game is pretty fun.
Once the enemies started firing back though I was in a lot of trouble, took a while before I managed to get them all killed off but I was just flying around the screen trying to avoid bullets.
I did later realise that there didn't seem to be a reason to avoid damage. I can understand why, it would be a very difficult game if you only had one life but still, it would be more engaging if you felt unsafe.
Was the final area (with the credits) meant to be a boss fight area because that's what I thought it was before seeing the first line.
If so I would like to know what your idea was for the boss fight and how it would differ, out of interest.