Passing through this Golden Key door and stepping onto the pentagram will initiate the Mega Satan fight. This key is automatically used upon entering The Chest or the Dark Room on the Golden key door.Īlternatively, Dad's Key can be used to unlock the Golden Key Door instead of collecting the key pieces. Killing two Angel Statues, and thus collecting two key pieces, will form the fully completed key. When killed, they will drop one of two key pieces. In subsequent runs, Angel Statues can be bombed to fight a Fallen Angel boss. To unlock Mega Satan, The Blue Baby (?) or The Lamb must have been defeated in an earlier run. Mega Satan is located behind the Golden key door at the start of The Chest and the Dark Room.
