For the first game I've played on NG this is really great, I'm not a gamedev but I have a few small critiques. WASD support would be really nice, as well as the ability to close the menu by pressing Enter. Also, I got stuck on the level select screen after Level 1-2, but I'm not sure if that's too big of a problem. Collecting all 80 acorns on the first level was really satisfying, so good work on the sounds.