Half Life cheats and cheat codes for PC

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Half Life

Cheats:
Update by: Joshua

Start Half-Life using "hl.exe -console".
You may do this by modifying the windows shortcut
properties for Half-Life and adding "-console" to
the end of the "Target" (or file to run).

The /GIVE command works if you start the game with
the -dev -console parameter, and that the God mode
cheat and map change cheat only work with the -console
parameter.

This will let you access the console using "~" key.

You may have to type "sv_cheats 1" in console first.
The following commands are available in console:

/fly - flying mode
/GOD - god mode.
/NOCLIP - walk through walls/fly.
IMPULSE 101 - Give all weapons and ammo.
/MAP xxxx - go to map xxxx. Map names are of the format c#a#,
- (c1a1, c2a1, etc).
- See the map list for names of all levels.
/GIVE xxxx - give item xxxx. The following items are available:

item_airtank
item_antidote
item_battery
item_healthkit
item_longjump
item_security
item_sodacan
item_suit

ammo_357
ammo_9mmAR
ammo_9mmbox
ammo_9mmclip
ammo_ARgrenades
ammo_buckshot
ammo_crossbow
ammo_egonclip
ammo_gaussclip
ammo_glockclip
ammo_mp5clip
ammo_mp5grenades
ammo_rpgclip

weapon_357
weapon_9mmAR
weapon_9mmhandgun
weapon_crossbow
weapon_crowbar
weapon_egon
weapon_gauss
weapon_glock
weapon_handgrenade
weapon_hornetgun
weapon_mp5
weapon_python
weapon_rpg
weapon_satchel
weapon_shotgun
weapon_snark
weapon_tripmine


Single Player Maplist:
c0a0 ; c0a0a ; c0a0b ; c0a0c ; c0a0d
c0a0e ; c1a0 ; c1a0a ; c1a0b ; c1a0c
c1a0d ; c1a0e ; c1a1 ; c1a1a ; c1a1b
c1a1c ; c1a1d ; c1a1f ; c1a2 ; c1a2a
c1a2b ; c1a2c ; c1a2d ; c1a3 ; c1a3a
c1a3b ; c1a3c ; c1a3d ; c1a4 ; c1a4b
c1a4d ; c1a4e ; c1a4f ; c1a4g ; c1a4i
c1a4j ; c1a4k ; c2a1 ; c2a1a ; c2a1b
c2a2 ; c2a2a ; c2a2b1 ; c2a2b2 ; c2a2c
c2a2d ; c2a2e ; c2a2f ; c2a2g ; c2a2h
c2a3 ; c2a3a ; c2a3b ; c2a3c ; c2a3d
c2a3e ; c2a4 ; c2a4a ; c2a4b ; c2a4c
c2a4d ; c2a4e ; c2a4f ; c2a4g ; c2a5
c2a5a ; c2a5b ; c2a5c ; c2a5d ; c2a5e
c2a5f ; c2a5g ; c2a5w ; c2a5x ; c3a1
c3a1a ; c3a1b ; c3a2 ; c3a2a ; c3a2b
c3a2c ; c3a2d ; c3a2e ; c3a2f ; c4a1
c4a1a ; c4a1b ; c4a1c ; c4a1d ; c4a1e
c4a1f ; c4a2 ; c4a2a ; c4a2b ; c4a3
c5a1

Multiplayer/Deathmatch:
boot_camp ; bounce ; datacore
lambda_bunker ; snark_pit
stalkyard ; subtransit ; undertow

Hazard Course:
t0a0 ; t0a0a ; t0a0b ; t0a0b1
t0a0b2 ; t0a0c ; t0a0d

Killing the last boss:
When you get to the level "World's Collide" you will be close
to the head boss. The head boss is called a Gene Worm,and to
kill him you must shoot his eyes out with the 2 mounted laser
guns. When both eyes are shot out his stomach will open up and
a large,pink,orb will show. Repeatedly shoot the orb until his
eyes come back and then repeat the steps of shooting his eyes
and the orb until he dies.

Opponents ignore you:
Enable Cheat mode. Then press ~ (tilde) and enter "/notarget" at
the console window.

Secret Scientist Message:

Start Half-Life with the following parameters:
Hl.exe -console -toconsole -dev
You should see a constant flow of text for everything you do.
Use a low damage weapon on a scientist, and then run after him.
Once he is trapped somewhere click the 'Use' key on him.
The text should say something like "I won't follow you, you evil
man".

Third Person:
Firstly, activate the console. Then, by pressing ` during your game you will bring
up the console. Type in /thirdperson into the console. You can now play Half-Life in
the third person instead of the first person.

Change Your Character:
Firstly, activate the console. Then, start up the game and go to Multiplayer. Then,
go to Customize. Then, change your player model. Then, play the game and bring
up the console and type in the third person command into the console. You will
now see that your player has turned into the player model of your choice!

Get A 9mm AR Automatic Weapon & Grenades:
Activate the console, then type /give weapon_9mmAR and then press "enter". That
gives you an automatic 9mm AR weapon. To get grenades also, type /give
ammo_ARgrenades (AFTER you have got the 9mm AR) and then press "enter".
You will now have an automatic 9mm AR with grenades.

Parameter Codes:

To enter these codes you must edit the Half-Life icon on your START menu.

Right-click on the START icon on the Windows task bar.
Click on OPEN.
Find the Half-Life icon and right-click on it.
Click on PROPERTIES.
Add the desired parameter to the end of the field that says TARGET or CMD_LINE.
For example, to enable developer's mode you would change the line to
read: "C:\Sierra\Half-Life\hl.exe -dev"
Without further ado, we bring you the codes:

-console
Enables the console. To access it, press tilde (~) while playing. See "Console
Codes" for information on using the console.

-dev
Developer's mode. Enables the console and displays debugging information while
playing. Useful if you're having technical difficulties and want to find out why.

-heapsize x
Tells Half-Life how much RAM (memory) it can use. For example, if you want it to
use 32Mb of RAM then enter the parameter "-heapsize 32768". CAUTION! Do not
request more memory than your computer has.

-nointro
Skip the introduction movies.

-noip
Removes the D.U.N. box for playing on LAN's (local area networks.) Remove this
command whenever playing on the internet. If you don't you won't be able to play
on-line.

-noipx
Use this if you receive an IPX error when playing on a LAN.

-numericping
Replace's the Half-Life server browser's "green dot" latecy info with real numbers.
Only available in v1.0.0.8 or later.

-startwindowed
Start Half-Life in window instead of fullscreen.

-toconsole
Immediately loads the console when Half-Life starts.

-wavonly
Disables Direct Sound and plays SFX in wav files. Try this if your sound card
stutters or you don't have DirectSound drivers.

-Quick Weapon Reload
First of all, this only works for weapons with slow reload times, like the magnum
and the tranquilizer crossbow. Upon running out of ammo in your clip, you will
begin to reolad your weapon. If you want to fire faster, simply changes your
weapon while in the reloading animation, and then switch back to the weapon you want to use, and realoading will be complete.

Need more cheats? Check the Trainers section for Half Life cheats