(Previously A-333) The final boss of the A section. Press S to spawn A-400. Press D to despawn A-400. Mechanic: Appears in the center of the room and locks the door. It throws bombs around the room which will bounce off the walls and explode in a few seconds. It will do this a few times, before disappearing and unlocking the door. (Room A-400 won't have any hiding spots.)
