Half Life: Opposing Force Cheats

CheatMode:
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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 item - /give <item name>
Enemies ignore you - /notarget
Level selext:
Map Names for /map above
of1a1
of1a2
of1a3
of1a4
of1a4b
of1a5
of1a5b
of1a6
of2a1
of2a1b
of2a2
of2a3
of2a4
of2a5
of2a6
of3a1
of3a1b
of3a2
of3a3
of3a4
of3a5
of3a6
of4a1
of4a2
of4a3
of4a4
of4a5
of5a1
of5a2
of5a3
of5a4
of5a5
of6a1
of6a2
of6a3
of6a4
of6a4b
of6a5
of7a0
Weapon select:
/GIVE WEAPON_X - give weapon X, where X equals:
GRAPPLE
KNIFE
PIPEWRENCH
EAGLE
M249
SNIPERRIFLE
DISPLACER
SHOCKRIFLE
SPORELAUNCHER
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.
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 nocliping 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.
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.
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.
Hints:
Save your ammo! If you can take out an enemy with the
wrench, use it instead of unloading a clip.
Maintain control of the medic; if you "release" him, other
grunts will yell for medical assistance and they'll take
the medic's supply of shots, leaving you with nothing.
You can only use the Barnacle on organic materials--these
are usually green, with small lumps. Latch onto them and
climb away!
Submitted by RickHH