The game is quite short and simple to pick up and play. Some sort of indication of how to play would have been nice, though. As a tech demo it's alright. As a proof of concept I feel like it should have had perhaps a little more to show where the game would go (would it stay silly? would it be more serious in nature? would there be stages of difficulty? different enemies? puzzles to overcome?)
The gameplay was smooth and ran fine. It was also pretty fun to run around and shoot enemies with random 'guns'. Overall the concept is sound and it runs well, but it might need a little more to flesh out where you'd go with the game.