2 things i noticed where that sometimes you glitch into walls. You can easly escape but it looks buggy. Also it was a bit of a bummer that i had to do everything again after one mistake.
yeah I know, I tried to fix it but the only way is by remaking the whole movement system again and it was late, but about restarting the level you can press "B+8" to restart the level that you were in, instead of doing everything again.