For your first game this is really good- fancy graphics and stuff can come later. I like how you use simple mechanics in an intuitive way to make a game that's fun and challenging. It is also very nice how it starts out with a super short intro level to orient the player. Great work!
If you get a chance, please try out and rate our game here https://itch.io/jam/brackeys-4/rate/722658. I hope you like it!