What a fun little game. I wish I could shoot diagonally like the enemies. The upgrade system is super cool and the little minigame when repairing yourself is really fun. I only think that repairing yourself should refill your health completely, since in the time playing the game I only got to repair myself twice. Also the game told me I won in the middle of a fight, which was a bit strange. But there are a lot of cool ideas here! Well done!