Something I value very highly in games (especially for jams) is how intuitive they are to play and this one is high up on that list! One button and you immediately understand what the came is about the moment you press it. Love the gradually scaling difficulty, the awesome visuals and the variety in the enemies. Dying from one hit is a bit harsh, but I loved what I played. Good job!
(And if it's useful to you here's a short video of my playthrough of your game!)