Invincibility glitch creates multiple soflocks in every level, but more importantly, it prevents you from using your stick when reaching the Nezha level. Even if you can still use the special attack, it is not sufficient to kill Nezha (you can only store 5 shots), resulting in a soft lock.

Death loop after defeating Ao Guang. It seems that going up before the screen fades out, and during the cutscene (?) prevents the softlock from happening

Fight with the monk :