The hard map "Dire Dire Docks" has a bugged step, there's a part which you have to race a minecart, but the minecart is stuck in the middle of the rail so u can't get through an iron door.
The hard map "Dire Dire Docks" has a bugged step, there's a part which you have to race a minecart, but the minecart is stuck in the middle of the rail so u can't get through an iron door.