The game is definitely very buggy, but still a good proof of concept. Take this jam as many notes. For 3000 examples never have levels without retry, just have the collectable be the exception to the reset always. Definitely don't have going back to previous levels on accident possible. Have a menu and level select so if someone does go back it doesn't force them to redo stuff. Also test your stuff way more, there were alot of times when the grapple missed or hit incorrectly cause I was in-between blocks. Other than that the design of everything was amazing overall (levels, graphics, controls, and music).