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About Underhell

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Underhell will be distributed in Episodic releases.

The Original Soundtrack for Underhell is being entirely composed by Tom Stoffel

Official Website :

Steam Community Group :

Underhell Greenlight Page :


Underhell will contain 1 Prologue - 4 Chapters - 1 Epilogue.




Latest Version        : 1.2
Required Games     : Source SDK Base 2007
Moddb        :
Website        :
Forums        :



*Fixed loading in Hermit after getting Wrench disabling attack.
*Fixed pressing use on hermit during some scenes cancelling his scene.
*Fixed not being able to rescue some survivors on level 1.
*Tweaked some enemy amounts in some hard areas.
*Moved one hermit card to be easier to find.
*Reduced amount of medical items in Level 2 South Wing.
*Fixed pressing "SkipScene" in the house fading to black.
*Fixed dreamcatcher being unusable after finishing chapter 1 if never used before.
*Tweaked some FOS of some enemies to facilitate sneaking around some areas.
*Fixed floating flashlight in Prologue_5.
*Fixed some enemies not going away when player successfully hide in weaponless parts.
*Fixed shooting barricades too early blocking progress near the end of the game.
*Fixed other miscellaneous bugs which you should not know about.

    Table Of Contents

    I.    Installation
    II.   About Underhell
    III.  Story Background
    IV.   Tips & Hints
    V.    Bug Reports
    VI.   Credits
    VII.  Disclaimer


1. Make sure you have Source SDK Base 2007 installed (Half Life 2 is NOT required). To install it, go to the "Library" window on Steam, select "Tools", and install "Source SDK Base 2007".

2. Extract the file into the following folder /../steam/steamapps/sourcemods (Make sure to delete the previous Underhell folder from 2011 Prologue if you have it.)

3. Restart Steam. You should see "Underhell" in your game library.

.Computer Requirements.

1.7 GHz Processor
1024 MB RAM
DirectX® 9 level Graphics Card
Windows® Vista/XP/2000, Mouse, Keyboard, Internet Connection

Pentium 4 processor (3.0GHz, or better),
2048 MB RAM
DirectX® 9 level Graphics Card (or higher)
Windows® Vista/XP/2000, Mouse, Keyboard, Internet Connection

II. About Underhell

Underhell is an Episodic Modification for the Source Engine. Chapters will be released once they are developed.

What you have just downloaded is Chapter 1 and a remake of the Prologue with the newest engine features created by the development team.

Underhell borrows from many genres and would be best described as a First Person Shooter Action/Adventure Psychological Survival Horror game with RPG elements.
These RPG elements include secondary quests with multiple outcomes, random survivors to rescue, different items to scavenge, and getting better equipment through both exploration and game events.


1.) Alt-tabbing the game can cause performance issues, crashes and graphical glitches.

2.) Make sure to close all unnecessary programs before launching the game for optimal performance.

3.) Running the game with the console enabled will disable the menu. Please note the message in the console:

Underhell is a storyline based mod with pre defined features that are enabled and disabled within the levels.
Tweaking the features will result in playability issues and will most likely crash the mod.
It is recommended to avoid playing with the console commands.
So please close the console, and enjoy the game.

.The House.

The House acts as the hub for the mod. You can come back to it anytime via a special button in the Main Menu. Every time you do something in The House it will save automatically.

If you start The House via the Chapter Selection menu it will completely reset everything in The House and you will lose your progress.

When you are in The House, you can check your e-mail, your mailbox, answer the phone when it rings, or just explore and try to uncover the mysteries that lurk in there.

Even though Jake's wife has recently passed away, you are not completely alone...

.The Game.

Underhell is split in 3 different "zones"

The first is The House. Each new chapter will have its own version of The House with different puzzles, things to discover, and diary pages of Jake's late wife to be found.

The second is The Dreams. With each version of The House will come a set of dreams only accessible during night time via the bed in The House. Dreams will give you bits of information about the story,
and might help you understand some future events better. They are very different from the rest of the game in both their narrative and gameplay, and focus mostly on exploration and solving puzzles.
They have a few twists to them that will challenge players since they are not necessarily bound by earthly rules.

The third zone is The Chapters where Underhell really takes place. You access a chapter from The House, and when you are done with a chapter you come back to The House. When everything has been done
in The Chapters, The House, and The Dreams, you must go to sleep in order to access the next version of The House. That is, when it's released of course...

III. Story Background

You play as Jake Hawkfield, a Special Weapons and Tactics operative who recently married and moved in with his beloved wife.
But soon after those happy events, his wife dies under mysterious circumstances, leaving only clues that suggest she committed suicide.
Jake falls apart, and only his best friend, mentor, and boss Frank is there to help him get over his grief.

The mod begins with a wake up call from Frank ordering Jake to come down to the station.
An armed group of elite soldiers have taken control of a hospital and all its personnel.

But Jake will soon realize that this is not a common hostage situation...

IV. Tips & Hints

1.) It is recommended not to play with the console commands. Nocliping around the maps or using "impulse 101" could cause some level glitches.

2.) You can kick open doors. Doing so will kill enemies standing behind it.

3.) Underhell has free aim, ironsights, and scopes. Use ironsights and scopes for better accuracy.

4.) Weapons and enemies have realistic damage models. A shot to the head will kill most enemies in Underhell.

5.) Avoid staying stationary during combat. Keep moving or you will be overwhelmed.

6.) If you forget what to do, press the Display Objective key (default TAB).

7.) Watch your endurance meter, the vertical bar at the lower left corner of the screen. It controls how quickly your stamina is refilled, how likely you are to bleed, and various other important things.

V. Bug Reports

If you encounter any bugs, glitches, or crashes please report them on the Technical Support forums here.

VI. Credits

Following are the credits for all content used in UnderHell to avoid any misunderstanding with the community.

FakeFactory, Veteran Gamer, Onemanshow, and Phatcat have given me permission to use their content.

So I want to thank them all for their kindness!

-Written by Mxthe

-Level Design by Mxthe

-Programmed by Carlos 'Charly' Sotelo

-Choreographed by Mxthe

-Voice Actors

Joseph Bracken
Aaron Cuevas
Tassilo Egloffstein
Stig Finsen Sydtangen
Mike Schroder
Nathan Wieczorek
Fredrik Arntsen
David Kingery
Alex Larrabee
Riku Lempiäinen
Phillip Marlowe
Brandon McKagan
Collin M.
Danielle McRae
Megan K.
Nathan Mubasher
Tom Stoffel
Brandon Tran
Sam Pearson
Michael Tsarouhas
Ian Wiese
Kevin Michaels-Grant
Patrick Liao
Yoav Landau

-Beta Testers

Hen Mazolski
Sam Pearson
Adi Matshulski
Joseph Bracken
Klaus Schroder
Mike Schroder
Stig Finsen Sydtangen
Yoav 'Koolfox' Landau
David Kingery
Dean Day
Brandon McKagan
Jacob Shettler
Michael Tsarouhas
Tom Stoffel
Beta Testers Collective – Ade
Beta Testers Collective – Frere D'Arme Jeremy Agostini
Beta Testers Collective – Phillip Marlowe

-------------------------Audio Artists-------------------------

Weapon Sounds - GAMEBANANA Community
Sound Mixers - Koolfox, Brandon Tran, Mxthe
Sound Editor - Mxthe
Sound Support - Strelok
Sound Libraries:,,,

-Music Composer

Tom Stoffel

Official Website :

Purchase the Underhell Original Soundtrack !

-------------------------3d Artists-------------------------


-Weapon Animations by Damon "Inter" Kropp-

-Weapon Advisement and Design by Michael Tsarouhas & Patrick Liao


Model, Textures : Progsys


Model, Textures : Progsys


Model, Textures : Progsys


Model, Textures : Progsys

Glock Pistol:

Model, UV, Compile:sHiBaN
Texture: Fub

SOCOM Pistol:

Model: The Lama, Lonewolf, Twinkie masta
Skin: Stoke, Lonewolf, Twinkie masta

Beretta Pistol:

Models: Sureshot, Twinke Masta
Skins: Twinke Masta
UV Maps: flamshmizer

Colt Phyton Revolver:

Model: Agressive napkin
Textures: Snake


Model - Twinke Masta
Skin - The End, snake
Reskin - Mxthe


Model: Schmung
Skin: Thanez
Reskin - Mxthe


Model - Schmung
Skin - The_Tub
Reskin - Mxthe

G36K Rifle

Model - Darkstorn, Twinke Masta
Skin - Darkstorn, Twinke Masta , Sproily
Reskin - Mxthe

M5 Shotgun:
Model - End Of Days
UvMaps - Hellspike
Skin - H4wk

M3 Shotgun:

Model- Valve
Reskin - Hector Gonzalez

XM1014 Shotgun:

Model & Textures - Millenia

Grenades :

Model - Valve
Skin - BlackHoleSon
Reskin - Mxthe


Flamesedge - Model & UV
Tsunami643 - Default Skin
Reskinning and Hexing - J.Barnes

Nightmare House 2 Props:

Models & Textures : Christopher 'Guessmyname' Jones

-Military Props Models-

illkid - Conversion
Americas Army
Reskins - Mxthe

-Floor Turret :

Model and Textures : Jen4
Reskin - Mxthe


The Guards

FakeFactory - Original HD Skins
Mxthe - Reskin


Valve - Counter-Strike Models
Skin - Predaaator
Reskin - Mxthe

Combine Ace Soldier :

Model - Synergy
Remodel & Reskin - Mxthe


Citizen Skins:


Models - Valve, Mxthe

Textures - FakeFactory, Rusty, Mxthe


Skin - J.Barnes
Faces - FakeFactory
Reskin - Mxthe


Model - FakeFactory
Skin - FakeFactory
Remodel - Mxthe
Reskin - Pedro "TigerboyPT" Calvo, Mxthe


Models: Valve, Christopher 'Guessmyname' Jones, Mxthe
Textures: Pedro "TigerboyPT" Calvo, Mxthe, Rusty

Young Breen
Reskin - Sander Pundi

Bodygroups and Limbs:

Christopher 'Guessmyname' Jones

Props & details:

Cassette Player & Cassette - Christopher 'GuessMyname' Jones
Old Hospital Equipement - Progsys
Modern Hospital Equipement - Progsys
Modern Furniture - Progsys
Better Beds - Progsys
FuseBoxes - Progsys
Food - Progsys
Batteries - Progsys
Glowsticks - Progsys
Flares - Progsys
Bandages - Progsys
Keycards - Christopher 'GuessMyname' Jones
CDCase - Progsys
WaterFountain - Progsys
Metro Tourniquet - Pyritz
Keys - Pyritz
Escalator Prefabs and Models - FresHinger
Mc-Donalds Prefabs - MDS31781
Pool Chair - Vincent074
Security Terminal - Anderes
Medical Closet - Josch, Mxthe

Laboratory Equipment - BabyFawnLegs

Vehicles :


Ambulance by vincent074

Driveable Jeep & APC:

-------------------------2D Artists-------------------------

-Custom Textures-

Pedro "TigerboyPT" Calvo

-Blood Textures-

Christopher 'Guessmyname' Jones

-Water Caustics & Dripping Effects-


-Particle Systems-

Magenta Iris

-------------------------Very Special Thanks To-------------------------

NightMare House 2 Development Team

Hen Mazolski - For his support, his contacts and his awesome ideas
Harry ".eXeC!" Jeffery
Christopher "Guessmyname" Jones
Yoav "Koolfox" Landau
David Kingery
Pedro "TigerboyPT" Calvo
Ido Tal

SMOD Community

"The Author"


Twinkie Masta

For their programming support

GoldenEye Source team
Saul Rennison
Steam Forums: Source Coding
Valve Developer Community

Some of the best mods

Smod Tactical
Smod Outbreak
Hidden-Source Team
Nightmare House 2

Some of the best companies

Irrational Games
Id Software
Monolith Studios

Some of the best websites


Some of the best directors

Hideo Nakata
Takashi Shimizu
Sam Raimi

And writers

Stephen King
Sam Lake

I would like to thank everyone cited above...

and the entire Half Life 2 modding community!


-This modification was developed by Mxthe using all content cited above.
-Programming for this mod was done by Carlos "Charly" Sotelo with help from numerous cited sources.
-High Resolution Textures were created and provided by Fake Factory with his authorization and consent.
-This software is powered by the Source Engine developed by Valve.

I would like to again thank the original makers of all the content used in this mod. I would not have been able to make this mod without the help of the Half Life 2 Modding Community.

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