MAP01: The Garrison (Master Levels)

The Garrison is a part of the Master Levels for Doom II. It was designed by Christen Klie, and is contained in the file GARRISON.WAD.

Walkthrough

 * Letters in italics refer to marked spots on the map. Sector numbers in boldface are secrets which count toward the end-of-level tally.

Essentials
Blue skull key

In the starting place (A) use the estern stairs to descend. Enter the northern corridor, turn around and press the skull button to temporarily open the door. Go to the western side of the corridor. Imps will rise as you come closer. Enter the teleporter before the door is closed. In that room (B) press the button, re-enter the teleporter. In the starting area again (A) use the southern way and keep on going until you find a staircase leading to the small area with the blue key revealed.

Red skull key

Return to the start (A) and use the estern stairway. Enter the northern corridor, turn around and use the lift. Turn left and move along the corridor until you pass the fast crushers. Walk on the narrow bridge located over the slime pool (C) then press the button. This will lower several teleporters. You need that one that is near the crushers, the eastern one. Walk up the small stairs towards it. That will bring you to the inaccessible stand with red key on it.

Yellow skull key

Return to the starting place (A) and open the blue door at the northern area. Lower the large lift by pressing one of two blue buttons. Drop down to the water pit, use the western alcove. Walk up the stairs. Go to the northern area (D). The yellow key is located on the pedestal at the bottom area. Now to get it drop down from the staircase's railing right to the pedestal.

Exit

Return to the place where you have grabbed the red key. Move along the corridor with the crushers. The second blue door is located at the bottom of the slime pool (C). Open the door. Turn to your left and head to the northern side. There is an exit sign as if indicating that you need the red and yellow keys to proceed. Descend by the small stairs. Head to the south, at the end turn right, proceed to the west. Flip the lion switch to make up the bridge. Keep walking on it until you get to the exit structure. Open the bars. Press either of the four switches for the end.

Secrets

 * 1) While being at the yellow key area (D) open the wall at the south. This will lead you to the pit where there are BFG 9000, a megasphere, a bulk cell and a teleporter to get out (sector 116).
 * 2) In the room where you do press the switch that lowers the blue key pedestal (B) open the western wall. Inside you can walk upstairs where you do grab rocket launcher, four items of BFG9000 and a megasphere on the pedestal (you first need to lower that three teleporters in the slime pool (C) area to get it). The corridor itself is counted as secret  (sector 120). Walking along it will lead you to the place with five boxes of rockets, cacodemon on the HMP skill level (or the pain elemental on the UV) and twenty five imps appeared on every skill level.
 * 3) In the slime pool area (C) open the south-western wall to enter the room with many health and armor bonuses and a teleporter leading you to the fourth and fifth secrets (sector 141).
 * 4) This is accessed from the secret#3. In this room of imps take the backpack and open the western wall to get out (sector 144).
 * 5) The secret#4 is counted as secret doubly (sector 147).

Bugs
Due to an altered node code in ZDoom, the player gets stuck after teleporting to the red key. No-clipping mode is needed to get away from the platform.

Current records
The records for the original map on the Doomed Speed Demos Archive are: