Half-Life: Opposing Force cheats

Cheat mode:
Load game with the hl.exe -dev -console -game gearbox command line. Press ~ during game play and enter one of the following console commands to activate the corresponding cheat function.

Effect Code

All weapons and ammunition impulse 101

God mode /god

No clipping and flight modes /noclip

Level select /map <map name>

Spawn indicated item /give <item name>

Spawn indicated weapon /give weapon_<weapon name>

Spawn indicated ammo /give ammo_<ammo name>

Auto-reload enabled +reload

Auto-reload disabled -reload

Adjust gravity sv_gravity <-999 - 999999>

Weapon names:
Use one of the following weapon names with the /give weapon_ code.

Weapon Weapon name

.357 Magnum 357

9mm Assault Rifle 9mmar

9mm Handgun 9mmhandgun

Crossbow crossbow

Crowbar crowbar

Desert Eagle eagle

Displacer displacer

Egon Gun egon

Gauss Gun gauss

Grapple grapple

Hand Granate handgrenade

Hornet Gun hornetgun

Knife knife

Laser Tripmine tripmine

M249 SAW m249

M40A Sniper Rifle sniperrifle

Penguin Bomb penguin

Pipewrench pipewrench

Rocket Thrower rpg

Satchel Charge satchel

Shock Rifle shockrifle

Shotgun shotgun

Snark snark

Spore Launcher sporelauncher

Ammo names:
Use one of the following ammo names with the /give ammo_ code.

Ammo type Ammo name

.357 Magnum 357

9mm Assault Rifle 9mm

9mm Handgun 9mm

Crossbow crossbow

Egon Gun egonclip

Gauss Gun gaussclip

M249 SAW 556

M40A Sniper Rifle 762

Rocket Thrower rpgclip

Shotgun buckshot

Spore Launcher spore

Ally names:
Use one of the following entries with the /give code to can spawn allies specific to the game. Each will appear with their own weapons.

monster_otis (Otis)
monster_human_torch_ally (Engineer)
monster_human_medic_ally (Medic)
monster_human_grunt_ally (Grunt with no weapons)

Map names:
Use one of the following map names with the /map code.

Boot Camp:
ofbooto
ofboot1
ofboot2
ofboot2
ofboot3
ofboot4

Regular game:
of0a0
of1a1
of1a2
of1a3
of1a4
of1a4b
of1a5
of1a5b
of2a1
of2a1b
of2a2
of2a3
of2a4
of2a5
of2a5b
of3a1
of3a1b
of3a2
of3a3
of3a4
of3a5
of3a6
of4a1
of4a2
of4a3
of4a4
of4a5
of5a1
of5a2
of5a3
of5a4
of6a1
of6a2
of6a3
of6a4
of6a4b
0f6a5
of7a0

Original levels:
You can play all the Half-Life levels that Gordon Freeman went through as Adrion Shepard, but in the lab none of the scientists will talk to you.

Hidden audio:
Approach the Boss of Opposing Force to hear backwards audio composed of the phrase "To win the game you must kill me Randy Pitchford" when played correctly. Randy Pitchford is the leader of the development team at Gearbox Software.

Hint: Get a gun at the beginning of the level:
At the beginning of the level where you reach the security guard, find a chair. It is easily moved. Move it to the door that he will open for you, and get him to open it. Slide the chair in between the doors, and it will not close. This may take a few tries. Go out, take the crowbar, charge it up until you reach the same security guard, and hit him until he explodes. Then, get his pistol with the laser sight and continue the game.

Hint: Hidden health:
When you are about to finish the "package" and are near to going into "Worlds Collide", use the Trans Locator's secondary trigger (which will teleport you into Xen). You will end up in a small cave overlooking a massive healing pool with two Bullsquids also wanting to enter it. To kill them quickly, shoot them with the Desert Eagle. To resume the game, run through the cave until you find a Teleporter Ball.

Hint: Spawn Grunts:
Enable cheat mode, then use the impulse 76 code to activate the Grunt-O-Matic. A message to start a new game in order for it to work will appear. If you want to continue where you currently are, just quicksave, then quickload the game. Once you have quickloaded, type in the code again to spawn a Grunt. Note: You must have the /noclip code on before you spawn the grunt because he will be spawned close to you. If this is not done, a message stating that the monster spawned is stuck in a wall may appear and the game will end. Do not spawn the Grunt in a closed position or the same message will appear. The Grunt you spawn will see you as a hostile. To have more fun, use the /notarget code and spawn a number of grunts to do your alien hunting. The Grunts you spawn will look like the Grunts from the original Half-Life.

Hint: Fun with spawning:
Enable cheat mode, then use the entities code to get a list of the creatures in the location you are currently in. Usually, when you try to spawn a creature, you have to use the noclip code to levitate in the air and spawn the creature nowhere near any objects. If a part of a spawned creature is spawned within a wall, ceiling, or another creature, the game crashes. However, if you enable the developer 0 code, the game continues even if a spawned creature is stuck, but the creature has yellow dots around it. Also, bind the spawn commands to unused keyboard keys; for example bind X "impulse 76" or bind y "give monster_scientist". The impluse 76 code works everywhere, and the hostile grunts created with it are easy to place where you want them; as they appear in front of you, rather than above. Now, enable the noclip code and fly around pressing the bound keys. Watch as Barney's Aliens and Grunts battle it out while Scientists run around being slaughtered.

Hint: Set health or damage values of player weapons and enemies in single player mode:
Type sk_ at the console window and repeatedly press [Tab] to cycle through the values. The sk_plr_ values are for the player's weapons, while other values are for enemies and health/shield chargers. The 1, 2, and 3 at the end of the syntax corresponds to the difficulty settings easy, normal, and hard. Set their values accordingly. Enter a number, a space after the syntax, then type restart to confirm the changes. For example, sk_plr_rpg1 99999 makes the rocket launcher in easy mode inflict 99999 damage with a blast radius that wipes out everything in the level.

Hint: Killing Gordon Freeman:
Go to the map named "of3a1". This is the map where you see Freeman running into the teleporter. Follow him into that same teleporter. After the map is done loading, you will see yourself falling. Normally, if you let yourself fall the game will restart at map "of3a1". However, if you enable the /noclip and go to the nearest platform in front of you, Gordon Freeman will appear. Gordon just stands there with no weapons, and wears silver sunglasses. It takes some time to kill him with just bullets -- try grenades or a very powerful weapon. Alternately, you can go to this location enabling the map of3a1b code.

Hint: See Shepard:
Successfully complete the game and wait until the credits are over. After the screen turns black, enable the brightness 9999999999999 code to see Shepard.

Hint: Redo the sniper course:
During boot camp, shoot the trainer and you will start again at the beginning of the course.

Hint: Give any gun the magnification of a sniper rifle:
Save with the gun you want to be magnified. Then, switch to the sniper rifle and turn on the scope. While the scope is on, load the previous save.

Hint: Vortigaunts on the Hazard Course:
After getting the Displacer on Xen, use the secondary fire before you go through the portal to Earth. You will be warped to the Crouch-Jump section of the Hazard Course, where one Vortigaunt will attack the holographic instructor. On the other side of the room is a second Vortigaunt and a shotgun. The portal exit is in a corner of the observation room.

Please select the first letter of the game's title below. If the word "The" appears at the start of a title, ignore it and search for the second word in the title:

| 0-9 | A | B | C | D | E | F | G | H | I | J | K | L | M |

| N | O | P | Q | R | S | T | U | V | W | X | Y | Z |

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