Pick up more bullets if you need them. Then open this door. The armour within will come at you. Back away but beware the monster by the wall. Have the armour follow you and fire at it with your revolver. Run to and fro and take more ammo if necessary. Take the axe left by the armour. Enter the house, find a 1-up and more ammo, watch the bomb.

Open the next door. Don't get noticed by the Super Officer. Have the ghost and the guard follow you outside. Wait for the door to the hall to close then switch between the axe and the revolver to defeat them. Then get the attention of the Super Officer. Shoot him with your revolver or get him to do away with himself. Take his missile launcher.

Find three gold chalices and three missiles in the hall.

Continue.