Cool game! I like how you used the two-button mechanic to play the game. The level design is also really good and varied!
Points for improvement, the "Wild Jam" and the "Godot" buttons in the main menu close the game. I think it shouldn't do that. Also, pressing spacebar brings me to the main menu without even a warning! It was bad at the start when I was trying to figure out what was jump, so I accidentally went back. It's a slight inconvenience, but an inconvenience nonetheless.
Can't wait to see you expand on this!