-User received the game for free-
I played through this twice. Once while goofing around with the jetpack, and once while actually staying inside the boundaries. Since the jetpack let me fly anywhere, I wandered around outside and on top of the map quite a bit. It's fun, but makes it hard for you as a dev to present the player with a particular experience. I suggest adding a roof if you want to keep the player inside. If you don't mind the player flying all over the place, then it's no problem.
I enjoyed shooting up robots, the weapon was a little over-powered, but it was alright that way.
I would like to see more levels to extend the time the game can be enjoyed.