You must first enable the ''console'' (see elsewhere on the codes list), then in the game, open the console and type ''map x''. x represents the name of the level as listed below; for instance, type ''map c0a0'' for the first level.
A lot of the time you won't begin in the place you would if you accessed the map normally. You will sometimes need to use the No Clipping Mode to move out of the start positions.
First, enable the console. Then, type the proper code into it to get the desired effect.
Description
Effect
give ammo_9mmclip
17 ammo for the glock pistol.
give ammo_357
Ammo for the 357 magnum.
give ammo_9mmbox
Ammo for the glock pistol.
give ammo_crossbow
Crossbow ammo.
impulse 203
Delete Targeted Enemy
r_fullbright 1 (Replace 1 with 0 to turn them back on.)
Eliminate Shadows
give weapon_handgrenade
Gives you some hand grenades.
give item_healthkit
Gives you some health.
give weapon_tripmine
Gives you some laser tripmines.
give weapon_snark
Gives you some snarks.
give weapon_357
Gives you the 357 Magnum.
give weapon_crossbow
Gives you the crossbow.
give weapon_crowbar
Gives you the crowbar.
give weapon_9mmhandgun
Gives you the glock pistol.
give weapon_gauss
Gives you the guass rifle.
give item_suit
Gives you the HEV suit.
give weapon_hornetgun
Gives you the hornet gun.
give weapon_mp5
Gives you the MP5.
give weapon_rpg
Gives you the rocket launcher.
give weapon_shotgun
Gives you the shotgun.
impulse 101
Instant Weapons, Ammo, and Armor
/god
Invincibility
notarget
Invisibility
give ammo_mp5grenades
Mp5 grenade ammo.
sv_gravity # (Lower numbers gives less gravity, higher gives more. Normal is 800.)
Set Gravity Level
give ammo_buckshot
Shotgun ammo.
impulse 102
Spawn Gibs
impulse 76
Spawn Marines
chase_active 1
Third Person
thirdperson
Third Person View
noclip
Walk Through Walls
17 ammo for the glock pistol.
give ammo_9mmclip
Ammo for the 357 magnum.
give ammo_357
Ammo for the glock pistol.
give ammo_9mmbox
Crossbow ammo.
give ammo_crossbow
Delete Targeted Enemy
impulse 203
Eliminate Shadows
r_fullbright 1 (Replace 1 with 0 to turn them back on.)
Gives you some hand grenades.
give weapon_handgrenade
Gives you some health.
give item_healthkit
Gives you some laser tripmines.
give weapon_tripmine
Gives you some snarks.
give weapon_snark
Gives you the 357 Magnum.
give weapon_357
Gives you the crossbow.
give weapon_crossbow
Gives you the crowbar.
give weapon_crowbar
Gives you the glock pistol.
give weapon_9mmhandgun
Gives you the guass rifle.
give weapon_gauss
Gives you the HEV suit.
give item_suit
Gives you the hornet gun.
give weapon_hornetgun
Gives you the MP5.
give weapon_mp5
Gives you the rocket launcher.
give weapon_rpg
Gives you the shotgun.
give weapon_shotgun
Instant Weapons, Ammo, and Armor
impulse 101
Invincibility
/god
Invisibility
notarget
Mp5 grenade ammo.
give ammo_mp5grenades
Set Gravity Level
sv_gravity # (Lower numbers gives less gravity, higher gives more. Normal is 800.)
Shotgun ammo.
give ammo_buckshot
Spawn Gibs
impulse 102
Spawn Marines
impulse 76
Third Person
chase_active 1
Third Person View
thirdperson
Walk Through Walls
noclip
Impulse Codes
After activating the conlse, press tide (~) and enter the following.
Description
Effect
impulse 109
Control onscreen monsters. This code may not work in versions of the game.
impulse 76
Creates a human grunt. Be careful, this can crash the game.
impusle 202
Creates blood infront of you, like spray paint.
impulse 203
Deletes target NPC or monster from the game.
impulse 195
Displays AI node information
impulse 105
Enemies can't hear you
impulse 101
Get all weapons and armor. Enter again for more amo and/or armor.
impulse 104
Lists global entities
impulse 102
Spawn gibs.
impulse 103
While looking at amonster, displays stats.
impulse 106
While looking at an object, displays model/sprite stats.
impulse 107
While looking at an object, displays the texture name.
Control onscreen monsters. This code may not work in versions of the game.
impulse 109
Creates a human grunt. Be careful, this can crash the game.
impulse 76
Creates blood infront of you, like spray paint.
impusle 202
Deletes target NPC or monster from the game.
impulse 203
Displays AI node information
impulse 195
Enemies can't hear you
impulse 105
Get all weapons and armor. Enter again for more amo and/or armor.
impulse 101
Lists global entities
impulse 104
Spawn gibs.
impulse 102
While looking at amonster, displays stats.
impulse 103
While looking at an object, displays model/sprite stats.
impulse 106
While looking at an object, displays the texture name.
impulse 107
Items from the console
Go to the start menu, then go to all programs, then go to accessesories, then click on command prompt. Select you Half-Life directory and type hl.exe -console then Half-Life should open. Start a new game then press the ` (tilde) key then type in these codes:
Description
Effect
give ammo_357
357 magnum ammo
give weapon_mp5
Gives you a MP5
give weapon_python
Gives you a 357 Magnum
give weapon_crossbow
Gives you a Crossbow
give weapon_crowbar
Gives you a Crowbar
give ammo_glockclip
Gives you a Glock pistol clip
give weapon_gauss
Gives you a Guass Rifle
give weapon_hornetgun
Gives you a Hornet Gun
give weapon_tripmine
Gives you a Laser Trip Mine
give weapon_9mmhandgun
Gives you a Pistol
give weapon_rpg
Gives you a Rocket Launcher
give weapon_satchel
Gives you a Satchel Charge
give weapon_shotgun
Gives you a Shotgun
ammo_crossbow
Gives you Crossbow ammo
give weapon_handgrenade
Gives you some Hand Grenades
give ammo_mp5grenades
Gives you some MP5 Grenades
give weapon_egon
Gives you the egon!
give item_longjump
Gives you the Long Jump Module
give ammo_rpgclip
Gves you a Rocket
give item_healthkit
Health
give item_suit
HEV Suit
give ammo_9mmclip
Pistol clip
357 magnum ammo
give ammo_357
Gives you a MP5
give weapon_mp5
Gives you a 357 Magnum
give weapon_python
Gives you a Crossbow
give weapon_crossbow
Gives you a Crowbar
give weapon_crowbar
Gives you a Glock pistol clip
give ammo_glockclip
Gives you a Guass Rifle
give weapon_gauss
Gives you a Hornet Gun
give weapon_hornetgun
Gives you a Laser Trip Mine
give weapon_tripmine
Gives you a Pistol
give weapon_9mmhandgun
Gives you a Rocket Launcher
give weapon_rpg
Gives you a Satchel Charge
give weapon_satchel
Gives you a Shotgun
give weapon_shotgun
Gives you Crossbow ammo
ammo_crossbow
Gives you some Hand Grenades
give weapon_handgrenade
Gives you some MP5 Grenades
give ammo_mp5grenades
Gives you the egon!
give weapon_egon
Gives you the Long Jump Module
give item_longjump
Gves you a Rocket
give ammo_rpgclip
Health
give item_healthkit
HEV Suit
give item_suit
Pistol clip
give ammo_9mmclip
Super Jump
You go to console and you have to type X=any number,0-999 sv_gravity X You should have only one space after gravity and before the number It shoud look like this sv_gravity 111
Description
Effect
sv_gravity 800
The normal jump
sv_gravity 0-999
You are now the master
sv_gravity 0
You can float and walk in air for amount of time.Highest jump
sv_gravity 999
You can't jump at all
The normal jump
sv_gravity 800
You are now the master
sv_gravity 0-999
You can float and walk in air for amount of time.Highest jump
sv_gravity 0
You can't jump at all
sv_gravity 999
Console Mode - Game of the Year
Instead of ''C:SIERRAHalf-Lifehl.exe -console''
it's
''C:SIERRAHalf-Lifehl.exe -dev -console''
Otherwise the impulse cheats don't work.
Enable the Console
In order to enable your console, (cheat box, basically) right click on the half life shortcut. Go down to properties. A box should open up with the properties. Go to the target tab. The line should look something like this: X:\Sierra\Half-Life\hl.exe . At the end of that put -console . Now it should look like X:\Sierra\Half-Life\hl.exe -console . Make sure that you are only using one space. Now, go back into Half Life. The main startup screen should have an extra selection that says console. Here you can enter cheats, see what's loading, and even kick people if you are on a server.
See a picture of one of the game developers
During the mission 'On A Rail' (the part of the game where you have to stop the rockets from firing and your in the sewers or something on a trolley). Turn on 'noclip' and float towards the top of the rocket. once you get to the top you can see a pic of a developer of the game. its his face tiled about 50 times on a square. there is a ladder at the top that brings you up another level with the same pic.
P.S - this Easter Egg is only reachable using 'noclip'. there is no other way to get up that high
Artificial staircase (1)
Put Trip Mines onto a wall in form of a small staircase. You can actually jump on them and even use them to reach places you're not supposed to reach just yet or even places that aren't supposed to ever be reached like roofs that can be used as shortcuts.
Artificial staircase (2)
Use a Snark (a bug) when facing a wall and jump onto it. Directly throw another one and repeat until you've reached the height you wanted to reach. This way you are able to reach places you're not supposed to reach just yet or even places that aren't supposed to ever be reached like roofs that can be used as shortcuts.
Gauss Cannon-Jump
A technique used in a lot of Ego-Shooters is the Rocket-Jump where you point a Rocket Launcher at the ground and fire off a rocket while jumping to be able to jump way higher than usually. The downside is that you lose health by doing this and since a rocket in Half-Life takes away lots of health it wouldn't really be of good use. Instead you can exploit another possibility in Half-Life: Using the secondary fire mode of the Gauss Cannon instead of the rocket launcher will also launch you high into the air but will not directly deal any damage (only eventual falling damage).
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