At this point whichever door you open both ghosts will come at you at once.

Make your way back and fight the enemies in this room for the silver key, and a 1-up.

Then go here. Be very much aware the bombs in the passage. Open the doors and have the ghosts come at you. Defeat them. This part is hard. There are five of them, one will probably wait for you in the room. Get the gold key and a 1-up.

Now head for the center of the floor. Battle the armours in the big room and get the bronze key.

Find the iron key here.

Open this secret door.

Defeat the enemies in this room. Save the girl.

Exit the level here.

Back.