One if on the big red X to bring mosskit back, if you don't have a item to put in it then it will never go away and you cant leave the beach and will need to restart.
The second one is with the elder that clips your birds wings, you don't have a bird? stuck in the den forever. Need to reset after that.
Third, carnival. If you press hard enough and long enough you can actually just keep walking forward bit by bit as he's pushing you.
i made it in