You may explore the many floors, rooms and surrounding areas of Ghost Tower in many ways. There are enemies to fight in all areas. Some may come at you quite unexpectedly. Enemies in some rooms may be alarmed at varying moments. There is, relatively speaking, less health to be aquired in Ghost Tower compared to most of the levels of the other episodes, so use the health you find sparingly. The following description gives you the fastest way to get through. The elevators in Ghost Tower are automatic, you don't have to operate the switch, and backing into elevators is often the safest way. When standing in front of a one-way door/gate pressing the 'open door' key will transport you through it.

NOTE: Be paricularly aware of the ammo bombs dropped by the green cloaks when in narrow passages.

Ghost Tower consists of a basement, a ground floor with surrounding grounds, a first floor, a second floor, a third floor (attic) and the roof.
For clarity I will refer to the different parts as the basement (floor 0), floor 1, floor 2, floor 3, floor 4 and the roof (floor 5), respectively.

START POSITION – Collect all the weapons ahead. Fight the enemies in this first area, try to kill some by blowing up the barrels. Pick up all the missiles and ammo.

Find a gatling gun here.

It is recommended (although not necessary since you shall pass through here later) that you go through here at this early state, kill the gunslingers, go down...

...pass through this underground corridor and...

...get up again here. Try to kill as many enemies behind the trees as possible or they may prove something of a nuisance at a later state.

Retrace your steps to the opening area.

Find a spreadfire gun here.

Go down to the basement here.

Find yourself here. Clean out the part of the basement you have access to.

Locate this secret door, pass through the one-way door and go up the southmost elevator.

Kill the armour and go down again.

Go through the one-way door. Re-enter this elevator section through the door from the north and take the northmost elevator up again.

Get this cross. Beware the guard coming through the door beyond the trees.

Go down again and make it here for the elevator to floor 1.

Find yourself here. Deal with the guards. Get the ammo if you need it. Some green cloaks may appear outside the columns.
Take the death chalice (you can go down again to the basement if you came here without the cross).

Enter the next hallway. Finish with the enemies found there, mind the green cloak behind the mirror.

Finish with the gunslingers in this room so you won't have to do it later. You can not get the cross in this room at this stage.

A black cloak may come at you throught the door to this room. Enter this room next and clean it out.

Go past this secret door. Beware the gunslinger. Take the missiles. Watch the bomb. Take the elevator to floor 2.

Find yourself here. Fight enemies coming at you from nearby rooms and passages. Mind the bomb next to the ammo.

Going down to floor 1 again here (the down arrow) may be a death trap...

...unless you have noticed the two hidden gunslingers, and shot them, previously OR if you have some plasma ammo left to finish them with before they see you.
If you make it through this part unharmed you will gain 25 health points by taking the health chalice. Take the cross to get past the death chalice. Go back up to floor 2.

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