For your first game this is some good work, while I saw your comment that you had no game testers I am with you on that. For me the controls were hard to acclimate to because I am used to using space as jump and if I use e to swap I can't move right. But overall the idea of the game was implemented well and solid. The last level was tough for me, I think I cheesed it but it was a great intro to game dev, especially in a 48 hour time frame.