Thank you for your feedback! I toned down the difficulty on the first few levels so more people can enjoy the boss rush of the last 4! If you play, let me know how the difficulty curve is and if it is too easy or too hard or if any levels feel out of place. I'll try to add checkpoints if I have time, but we are currently working on a game jam and have a killer concept idea. Follow if you'd like more updates and I will try to redo the checkpoints later if I can. Let me know if you have any more feedback or anything you'd like to see in the future!