MAP29: Water Refining Facility (1000 Line Community Project)

MAP29: Water Refining Facility (in Vanilla ports, named simply "Water Facility" on the automap) is the twenty-ninth map of 1000 Line Community Project. It was designed by StormCatcher.77.

Essentials
Flip the switch on your left to reveal one or two zombiemen then press on the south wall to lower a lift, ride it up and go forward to a T-junction. Turn right at the junction to enter an area with two switches, flip the south switch then go back to the T-junction where a wall has lowered to reveal a room with a small bridge over some nukage. Follow the bridge through the north doorway to find another switch, flip it then return to the nukage area and walk through the now-open east wall to drop into a hallway with more nukage pools. Head south and west through the nukage but watch out for demons and lost souls that are released behind, as well as a revenant on Hurt Me Plenty (HMP) skill level. When you reach the end of the hall, lower the recessed metal lift in the south-west corner and ride it up then turn right to find a switch that opens a door leading back to the chamber with the two switches you entered earlier - the north switch is now accessible, but two spectres (and a revenant on UV and NM) will be released behind you when you approach it. Flip the switch then run east through the first nukage room and drop down to a lift before it rises, kill the spectre that is revealed in front of you then follow the tunnel north to the yellow keycard. Make sure to run towards the key, or you will be hit by a crushing ceiling before you reach it.

Return to the chamber with two switches and head south through the yellow key door, then drop into an enclosed area with one or two spectres and turn left to see a super shotgun - approaching this item will instantly lower the surrounding walls revealing demons, as well as imps on HMP or Hell knights and a baron of Hell on UV and NM. Kill everything along with the mancubi on the raised platforms then head south-east to find a switch next to a red key door, which will open a tunnel behind you with chaingunners and demons guarding a rocket launcher and a plasma gun. Go back to where you found the super shotgun and head due west until you drop into a water trench with spectres and a chaingunner, then head south until you see the wall in front of you lower to reveal one or two arachnotrons. Go past the arachnotrons to enter the south side of the level, which spans three floors and contains the red keycard.

Turn left as soon as you enter the area and go forward until you pass a wooden crate, then walk round it to find a switch that will lower a bridge behind you and release two demons and a knight. Step over this bridge then go round the corner; as you step over a second lowered bridge you will see a metal wall on your left lower and reveal some spectres along with a chaingunner. Go through here to an area with imps and ride the lift on your left up to get on to the surrounding walkway, head south until you find a chainsaw among some burning barrels then follow the short tunnel to a switch round that will raise two nearby bridges. Follow the walkway north across both bridges, kill the mancubi and other monsters that teleport in to block your route then continue following the walkway west until it ends. You will see the crate you walked round earlier on your left - run south to leap across to it and collect an armor, then flip the switch in front of you to lower a lift to the south. Run west and south around the walkway until you get to a chaingun, get on the lift before it rises then run south-west to leap to an adjacent platform. From here you can follow a narrow passage past one or two chaingunners to the red key.

From the red key, drop to the walkway below. A wall on your right will lower and reveal one or more revenants (plus an arch-vile on HMP or higher), and one of those enemies will teleport to a bridge ahead of you. Follow the water north and flip a switch ahead to lower the bridge that the monster teleported to, then flip the switch that is revealed on the east wall to raise the bridge again; from this point you must retrace your steps back to the switch that will raise those bridges again, then head north across them to a silver lift which you can lower to get back into the tunnel that held the rocket launcher and plasma gun. Head north through the tunnel then turn right to find the red key door you passed earlier and open it to reveal a teleporter that will put you on a ledge above the nukage pools at the north side of the level. Enter the gray doorway in front of you then head east and south to a switch that will raise the curved wall next to where you found the super shotgun. Go back to this wall and run along the top of it, then run south past an arachnotron and imp (or revenant on HMP or higher) to leap across the water trench and land on the other side of it. Proceed north to a low brown lift and lower it to reveal one or two revenants guarding a super shotgun and backpack, then ride the lift up and follow the water stream here south to the blue keycard. Watch out for the imps and chaingunners that are revealed behind you when you take the card.

You now need to return to the south area of the level and retrace your steps until you reach the switch that raises the two east bridges; this time, before crossing the second bridge head west to enter the walled section in the middle of this area, where you will find a switch that raises a bridge on the west side. Now return to the crate that had the armor on it and run across to the walkway next to it, then head west across the bridge you just raised to find a blue key door with a switch behind it. The switch will lower a nearby wall and reveal various monsters, including an arch-vile on HMP or higher. Enter this chamber, collect the plasma gun then try to open the tan door to finish the level.

Other points of interest
In the L-shaped area with three nukage pools, a closet will open containing lost souls. Go inside it to find a rocket launcher, two rockets, two medikits and a box of bullets.

Secrets

 * 1) In the rectangular area at the south end, follow the gray ledges until you reach the north-east corner, then use the silver lift. Instead of going through it, ride it up to get rockets. (sector 49)
 * 2) After using the teleporter behind the red key door, head south, east, and south all the way to a switch, which will raise the bridge in the center of the map. Go along this bridge to the other side, then south towards where an arachnotron was. When you do this, quickly cross the bridge again, then jump down to the north and head north-east onto the megaarmor platform before it rises. (sector 150)

Bugs
Two stimpacks (Things 475 and 476) have no flags set for any of the three difficulty classes, so they do not actually appear in the level.

Current records
The records for the map at the Doom Speed Demo Archive are:

The (absence of) data was last verified in its entirety on April 3, 2022.

Things
This level contains the following numbers of things per skill level: