No More Room in Hell: Map Secrets Part 3: M-P

Welcome to Part 3: M-P

I added a small secret to nmo_mansion_v1_eng and updates for nmo_miner_detour, but the secrets for those maps are covered in the linked Secrets to custom maps guide

I have left nmo_moonarbase_v2fix out. I don’t have a version I can work with, but I’ll add it if it’s re-posted to the workshop

If you’ve found other secrets for these maps, let me know in the comments and I’m happy to give credit. Current holes in this guide include the sequence for the nmo_nuclearplant secret, the last weapon box in nmo_origins, the telephone secret in nmo_paranoia, a secret gene in nmo_pharmacy, the secret respawn button in nmo_plutonium, and the final step to get ending 2 in nmo_project_enigma

Its a rare spawn, but sometimes there is a machete in the back of the hedge maze near the sewer entrance

As you go through the plane, every section has 2 compartments on each side that can be opened for items. Look for the ones that look a bit out of place with the others

After getting the welder from the compartment in the objective, go to the other end of the plane and use it to open a box of supplies

1969

After using the access card on the 2f, bring it downstairs and open the surgery room for a chainsaw

After getting the welder and green key, you can open the yellow locks with the welder and hold e on the green boxes

2f after you leave the room

2f before using red key


1f by surgery room

Go around the comer on the 1f before leaving



You’ll pass the rest on the way to the radio

Break the 6 small boxes at the start for items and a welder

After falling into the water, break the 5 small boxes in the next area for items and a second welder

Clusters of breakable blocks have items, but individual ones in this map do not

9247 (most common code in nmrih)

Break a spot under the stairs for a machete

Hold e on the sword to remove it from the stone, it can be carried as a moveable weapon

Use the welder to open the cages, hang onto it as there are 11 more cages on the map

Eat cakes for health, there are 8 more. Careful, you can eat cake even if at full health. Leave it for your teammates

Breakable blocks


Multicolored blocks that do not emit light on this map that can be broken for items, these 2 are at the start. I’ve found 19 on this map


These two are in the next bridge area



1 block before the lava area, 3 more in it



3 more blocks before the green head room (see secret below)

5 more blocks are in the green head room as a reward

Before village

Once you emerge

In a village house

Zombie Generators

Metal cages on this map spawn zombies and also give items when broken. This first one near the lava area will always give a fire extinguisher

There is another around the corner from this area


2 more after using the tnt to break the floor

And one more at the map’s end

Green Head Secret Room


Use the extinguisher to put out the lava in 2 places then hold e on the green head

The other green head is in the library

Getting both will unlock this room near the tnt for the minecart

This room can be a trap for unprepared players, as there are runners and these two boss green head zombies. Go in as a team and be ready. The center area will open as a reward when the two green head zombies are killed

There are 5 breakable blocks in the reward which will include a chainsaw

nmo_miner_detour_v12_final was previously covered. Most of the secrets covered there have not changed in updates. I’ll update the head secret

Head 1 is in the train at start, jump up and punch it

Head 2 is behind the cabinet before you go through the fan drop

Head 3 is inside the right resupply box where you get the cogwheel

Backtrack just a bit and head 4 is in the locker


The 4 heads open a secret room on top of the ladder across from the bellows, the room has a chainsaw and weapon box

Hang onto the welder after its objective for a weapon box at the holdout event,

A storage room later on,

And another weapon box before the end

This map only has 2 objectives: take the hammer in the starting area downstairs and start the generator. If that’s all you do, the ending event will be impossible to survive – there’s a very large number of zombies in a small area, 2 turrets that will shoot you and electrified water

You will need to disable these and gather a large stash of supplies before starting the event


At start, climb up to the vent for a machete and key

This green club key opens the 2 gun lockers


Use a gun to shoot the 4 ceiling tiles

You’ll get ammo and a cell phone that says call for airdrop when picked up

Go down to the next floor and press the button to remove the roaming zombie. This will despawn a zombie who roams downstairs in the turret area


Get the ladder and bring it back to the starting area to access the roof

On the roof, use the cell phone at the radio and press e


You’ll be airdropped a weapon box

Now jump up the A/C units to get to the top

Where you’ll find a pink heart key

This key opens the room below

Hold e on the panel here to cut the power and turn off the electrified water downstairs

Then press the button to access the chainsaw downstairs

Go down 2 floors and fight your way through (hold e to disable the spawners) to a key on one side

And a welder on the other

Use the key on the door on this floor

And weld the cages in the room

You will get supplies, the health box for the starting area and an access card. The access card will make the turrets target the zombies instead of players

On the next floor down, get the fire extinguisher where the zombies break out

Put out the fire

And get the access card at the end of the path

Now use the hammer in the starting area

To break open the boards at the bottom of the stairs

Insert the cards into the turrets. Be quick they will be firing at you

Roll up the shutter, grab the chainsaw and get ready. The event will start when the generator is filled. The room will then fill quickly with fire and you’ll need to hold out in the turret room. If you jump onto the shutter tops or back into the building, you’ll be teleported into the fire. Casual difficulty will respawn you in the fire. Good luck!

Press the button on the console to turn off the fan, then break the vent and go through to access the area below the fan which has an m16 and machete

After the cells, go to the end of the hall for a room with a resupply box

Near the end, break into a vent to access a secret room

At this junction, head right and follow the pipe

Make your way down to the water for a weapon box. Getting down is easy, getting back up is harder

In the underground area, push this block forward, get on top, break the grate and get a tnt and gene

Also in the underground, open a metal door for a hidden health box

Near this health box, break the grate behind the machine and follow the vent for a tnt and gene

Go to the corners of this vent for hidden items before dropping down for the supply

Use the welder to open a box of grenades

And to attach the grenade launcher

Hang on to the welder and use it in the store for a room of weapons

After pressing the first button, press e on the wall near the start to find a hidden button
Missing sequence for secret

Use this button to open the path outside. Press e and then e again after its depressed. It’s an inconsistent number of presses, just keep using it until you get outside

There is a weapon box outside

Use the welder at the start (ikr), and you can actually access the 2 sheds for supplies

Four of the ravens on this map will let you know that they are sitting on weapon boxes. It’s easy to miss if you aren’t the first player to get to them

Other ravens will point to nearby supplies on the ground. If you break the glass hallways in the dark building, the raven there will let you know you found a stash of items

Get up on the railing and jump the broken stairs to get up to an area with supplies

Hang onto the welder and use it to open another area with a supply stash

At the start, go into the back room (later the extraction), there are always 2 explosives here

Note the armory in the first area as you pass it

At the bridge, enter the code 1974

Backtrack and you can now open the armory

It’s one of the largest in the game and has lots of explosives

Find two sets of 2 digits for the code to this room with many supplies


This code will always be in the immediate area, check the train tracks and the trap room if you’re having trouble finding it

Lower the elevator from above to access supplies behind it

4 of the 5 boss floors have a locked box near the transparent cubes. The floating torso one does not. On the first 3 boss floors, there will be six tiles with icons on the left and right walls


Look for a clue about the correct tile, there will be a smaller icon somewhere in the room that will be the same icon as one of the six on the walls. Shoot the correct large tile and the box will open. If you do not shoot the correct tile, you cannot open the box


The clues will change based on map path

Remember the clue: if you don’t find one on a later floor, use the one from the previous floor

The third floor usually has a new clue. A new clue may be the same as the old one

Missing Secret – I do not know how to open the item box on the last floor. It looks dangerous to get

In the bathroom with the health box on the first floor, break the fruit picture for a gene

You can reuse the welder on a weapon locker

On the top floor, break the stained glass for a yellow key

Use this key near where you get the book for a secret room with a weapon box

Get dynamite from this refrigerator to open the armory

When you get downstairs, go around the corner for a room with three red X’s

In the courtyard, there is a raven sitting on a cabinet on the 2f

Bring it down to the room to sacrifice it

Also in the courtyard is a pigeon siting on a light, shoot it down and sacrifice it in the room

Press e on the green vending machine for a seagull and this is the last sacrifice

You’ll get a sniper rifle for a reward

At start, break the wood plank and check the You Will Die room (don’t go too far in) for a gene at the top of the doorway. It doesn’t always spawn

Break the area to get under the stairs for a .308 stash

Right before where you build a table, break the boards not marked with a red X for a secret stash

Break the first set of boxes in the dark room for a gene and machete

Break the bookcase and the wall behind it for a secret room with a shotgun and weapon box

After dropping down, turn around and break the picture on the right for the secret respawn button

Go through the break in the fence to get supplies in the ditch

At the area where you drop into the white area, head down into this blue area for a tnt

Look for other hidden items here too

Press e on this med station to heal

Where the train passes you, you can enter the last boxcar for supplies

Missing telephone secret

Break the face to access the balcony for a machete and m16

Take the key at the bottom of the building you jump to


Take this key all the way down to the sewers with you and use it on the door in the room where the explosive is found for a weapon box

Press e on this vending machine to knock it over

Secret Gene 1


In the passage behind, break the boards for a secret room with a gene

Continue in this same passage and there is a .308 stash behind the box

Medical Supply Secret 1


Deeper in the passage, break the lock, open the door and descend the stairs for ammo and a resupply box of meds

There is a moveable headcrab with a party hat. He’s just here for fun

Secret Gene 2


After jumping up here, jump back over to the top of the trailer to find the gene next to the building

Secret Gene 3

Before going up the vent for the restaurant holdout, look for a gene in the corner of the room

Medical Supply Secret 2

Return here after proceeding in the passage and the door will have broken open

Pass through the fire, you will not take damage, then drop through the hole

You will be teleported to a secret room with a resupply box of meds. Go to the medical icon to teleport back

Missing – Secret Gene

Right next to bridge button. Can use the prop boxes to boost to it but can’t get them up there

Medical Supply Secret 3

Check under the stairs for another med stash

Medical Supply Secret 4


Go right instead of left here and follow the signs

Open the medical box for another med stash

Secret Gene 4

In the area with lots of cars, find the gene on the back of one

Medical Supply Secret 5


After dropping down and before dropping down again, go around the edge for another secret med stash

Medical Supply Secret 6


After turning on the power, return to this second floor room to find this door open for another secret medical stash

Missing secret respawn button

In a hall with three doors, open the last and teleport at the green dot


It will take you to a dark room with a machete off the earlier fountain area. The fence here will now be removed

Break the green wall before going up the ladder for a secret room

At the street, use the nearby boxes to build stairs to access the top of the wall, where there is a chainsaw and fuel

Then use a box to access the other alley for a teleport

To a secret room

Shoot the door mechanism through the window gap to open the room

The trash bag at the start is a weapon box with a few items

Hold e on the multicolored tobacco pipe to clear your head

In the downstairs bathroom, you’ll get a message about the turds


Move the turds from the urinals to the toilets and the last stall will unlock. Go in for a secret

Buy Bombs

Right before the metal detectors, there are 4 coins on a table


Put 2 coins into each of the 2 coffee machines here for 2 explosives

Extra Meds


Press e on the white part of the scanner to slide the box inside forward

Break the box for med items

2 eye scanners

The skull used for the eye scanner will not be used up

Bring the skull through the map with you and there is another eye scanner after the elevator

The weapon box is fake, just like the one in the generator area, but there is a stash of supplies around it

2 welders

Get the welder from behind the pipes

There is another in the area where you weld gates and start generators. It will go faster with 2

Parkour Secret

If you get on the railing, you can jump to this hidden ladder. If you press e on it at any time, the ladder will fall

Position yourself on the ladder so you will come up in the middle of it, otherwise you will hit your head and fall into the water

When you reach the top, crouch then climb across the ceiling and then up onto the ledges. The area between the ladder and the ledge is a narrow hidden horizontal ladder and you will fall if you don’t stay crouched. Stay crouched and it will move you up and onto the ledge. Jump from one ledge to another to gather the items up here

Health Box

At the elevator holdout, there is a hidden health box in one of the tunnels the zombies break out of

Confirmed Broken -.50 cal secret. DON’T DO THIS ONE

There is always a fire extinguisher before the starting teleport

And one after, take one of these to the end of the map

When you enter the final area after using the access card, you will notice a barrel burning a ladder

Put it out with the extinguisher quickly or it will break

Bring the ladder to the control room

Place the ladder, stand back and break the hatch, a body will fall out

Unfortunately, this turret was broken in updates and does not work. Interacting with it will freeze the entire team in place. The map is alpha – but maybe it will be fixed someday

Signal Jammers and Computer Hacking Device

Use a signal jammer to disable a camera

You’ll find one in the room overlooking the mech

Place it on the blue x to disable a camera


There are two more signal jammers in the second area of Area A protected by a gas trap, stay back and shoot the door on the left and the zombies behind to make this trap much easier. Hold e on the panel inside the room to disable the trap

There is a computer hacking device and 2 more signal jammers. The computer hacking device is needed for later secrets in Area C and the Offices

Infrared Goggles

The Infrared Goggles are used to see the camera’s vision. There are 3 spawn locations

1 – In the same room with the 2 signal jammers


2 – Go through the vent in the conveyor belt area. Go right then left in the vents to emerge near the goggles

3 – In the radiation area

Radiation Suit


Picking up the radiation suit, you’ll be immune to radiation for a short time

Run to the radioactive area and pick up the supplies/head/goggles

Insta-hacker

The insta-hacker is used to open a single door or box marked with a green X. There are 3 spawn locations

On the conveyor belt in Area A

On an office desk in Area B

In the terminal room in Area C. You will not be able to get the insta-hacker if it spawns here and you get the Storage path instead of the Area C path. You also cannot get Ending 3 because you cannot return to Area B to free the prisoner

The insta-hacker can only be used once. It can free the prisoner in Area B

Or it can open a room of supplies in the Offices

Or it can open a box of ammo in the Underground with a green X

Storage Path Secret



Activate the forklift, climb up it and jump across to the containers for a secret area

Area C Path Terminal Secret


Go to this terminal and use the computer hacking device. The puzzle will start as soon as the device is placed. Press e on the terminal’s button as the blocks contact the blue middle line. You will hear a good noise if you’re doing it right and a bad noise if not. You only get one chance


If you do well enough, the door at the top of this area will open for a room of supplies

Offices Secret

Hold e on the terminal to place the computer hacking device

Press e on the 3 sliders to lock into place in the gray area

This will open the nearby storeroom

Ending 1

Take the elevator down at the final area

You will see a combine soldier at a console


He will activate a laser field under the elevator

Ending 2 (missing final step)

While gathering the heads, you likely found the red crystal and that there was one extra head. You will need to carry both of these items down to the Offices

Bring the head and crystal to this office then go down the hall and left

The office on the left has a dark bookcase

Shine your flashlight on this bookcase and you will notice a peculiar green book

Get in close and press e on this book

The bookcase will slide over and you can break a vent

Climb through the vent to emerge in the office you left the items in front of and use the computer to open the door

Place the crystal on the left and the head on the right. The head will teleport

The head will teleport to the ending area

You can use the head in the scanner. Disappointingly, this won’t do a thing. Continuing on will get you ending 4 in the teleporter and going back to the elevator will just be ending 1 or 3. There must be another requirement i’m missing, as the long and complex process to teleport the head shouldn’t reward you with nothing. It’s a shame, it’s a good map otherwise

Ending 3


Use the insta-hacker to save the prisoner in area B

Take the elevator down again


The prisoner will kill the combine soldier with a shotgun

Ending 4




To get this ending, just open the door and use the teleporter. It will take you to a pink room and extract you from there shortly

nmo_mansion_v1, nmo_miner_detour_v3, nmo_miner_detour_v12_final
https://steamcommunity.com/sharedfiles/filedetails/?id=2929734750

nmo a-d
https://steamcommunity.com/sharedfiles/filedetails/?id=3305232181

nmo e-l
https://steamcommunity.com/sharedfiles/filedetails/?id=3310524255

nmo q-z
https://steamcommunity.com/sharedfiles/filedetails/?id=3313395338

Follow this guide in-game by using the steam overlay (shift+tab), this and more tips here:
https://steamcommunity.com/sharedfiles/filedetails/?id=3294874237

Thanks again to all map creators and their contributors!

Thanks again to Porkchops4lunch and Kevin for hosting great modded servers!

Hope this guide brings some love to some old maps before nmrih 2 finally gets here

All Map Secrets guides released and linked. Enjoy!