GamePatchPlanet - Left 4 Dead Cheats, Codes, Trainers, Patch Updates, Demos

Cheat Codes
At the Steam control panel choose the My Games tab. Right click Left 4 Dead and select Properties, now select Set Launch options then enter -console
Now start the game and the console window will appear at the main menu. Type bind c toggleconsole
You can now enter one of the following map codes to load up a map:
If you want to use the cheats in single player, you must do the following to allow the codes to be used: Select Play With Friends then select the Create Lobby option, now select either the Campaign Mode or Versus Mode option. Enter the Game Settings: Friends-Only Game menu and change the Server Type to Local Server. Now during gameplay press C to bring up the the console, you can enter one of the following codes:
Full health for your character - give health
All weapons and ammunition - impulse 10
Quick change map - changelevel <map name>
No clipping mode - noclip
Invincibility - god <0 or 1>
Toggle receive damage, but will cannot die - buddha <0 or 1>
Add ammunition to primary weapon - impulse 101
Spawn indicated item - give <item name>
Spawn indicated item for NPCs - ent_create weapon_<item name>
Spawn item for bot team mates - sb_give <item name>
Remove a team mate - ent_remove
Enable Internet LAN, enable while at the Campaign Lobby screen - sv_lan 0
Start LAN server, enable while at the Campaign Lobby screen - map <map name>
Infected cannot see you - nb_blind 1
Teleports all survivors to your position - warp_all_survivors_here
Teleports all survivors to the nearest checkpoint - warp_all_survivors_to_checkpoint
Teleports all survivors to the finale - warp_all_survivors_to_finale
Teleport yourself to the next chapter - warp_to_start_area
Be spectator - ent_fire !self setteam 1
Be survivor- ent_fire !self setteam 2
Be infected - ent_fire !self setteam 3
Spawn indicated NPC type - z_spawn <NPC name>
Spawn active pipebomb under you - boom
Spawn lit Molotov cocktail under you - fire
Low gravity jumps, falls, and pounces - ent_fire !self addoutput "gravity 0.10"
Unlimited ammunition - sv_infinite_ammo <0 or 1>
Set speed of the Smokers tongue to fly - tongue_fly_speed <number>
Set maximum range of the Smokers tongue attack the default value is 750 - tongue_range <number>
Bot team mates shoot nonstop - sb_open_fire or sb_openfire
Set time before a burning Witch dies from fire - z_witch_burn_time
Set amount of damage Witch's attack does - z_witch_damage <number>
Toggle allowing witch to change targets instead - z_witch_allow_change_victim <0 or 1>
Set maximum health of Tank - z_tank_health <number>
Set number of seconds until the player loses control of Tank from not attacking survivors - z_frustration_lifetime <number>
Toggle if bots can do friendly fire damage - sb_friendlyfire <0 or 1>
Disable all wanderers, mobs, specials, and Bosses - director_stop
Force a panic - director_force_panic_infinite 1
Force a panic event - director_force_panic
Set number of normal zombies - z_common_limit <number>
Set number of panic zombies - z_mega_mob_size <number>
Set zombie health - z_health <number>
Set zombie speed - z_speed <number>
Set amount of damage zombies do to survivors - z_pounce_damage <number>
Set amount of damage for zombies to pounce through doors - z_pounce_door_damage <number>
Toggle never ending panics - director_panic_forever <0 or 1>
Toggle mob rushes - director_no_mobs <0 or 1>
Toggle controllable Boss Infected - director_no_human_zombies <0 or 1>
Set camera behind the shoulder in third person view - thirdpersonshoulder
Make the player say phrase - vocalize <phrase>
Suicide - kill
Quit game - quit
Enable wireless Xbox 360 controller - exec 360controller
Toggle set fixed camera in third person or third person shoulder view - thirdperson_mayamode
Third person view - thirdperson
Return to first person view - firstperson
Display available servers - openserverbrowser
Start recording game play new file created for each level automatically - record <filename>
Stop recording game play - stop
Play recorded game play file - playdemo <filename>
Restart game with cheats active - retry

NPC Names
Use one of the following names with the above z_spawn code:
boomer
smoker
hunter
zombie
mob
witch
tank

Item Names
Use one of the following names with the above give or ent_create weapon_ codes:
pistol
propane_tank
pumpshotgun
rifle
smg
ammo
first_aid_kit
gascan
hunting_rifle
moltov
oxygen_tank
pain_pills
pipe_bomb
autoshotgun

Map Names
Use one of the following names with the above changelevel or map codes:
Campaign Mode
No Mercy Apartments - changelevel l4d_hospital01_apartment
No Mercy Subway - changelevel l4d_hospital02_subway
No Mercy Sewer - changelevel l4d_hospital03_sewers
No Mercy Hospital - changelevel l4d_hospital04_interior
No Mercy Rooftop Finale - changelevel l4d_hospital05_rooftop
Death Toll Turnpike - changelevel l4d_smalltown01_caves
Death Toll Drains - changelevel l4d_smalltown02_drainage
Death Toll Church - changelevel l4d_smalltown03_ranchhouse
Death Toll Town - changelevel l4d_smalltown04_mainstreet
Death Toll Boathouse Finale - changelevel l4d_smalltown05_houseboat
Dead Air Greenhouse - changelevel l4d_airport01_greenhouse
Dead Air Crane - changelevel l4d_airport02_offices
Dead Air Construction Site - changelevel l4d_airport03_garage
Dead Air Terminal - changelevel l4d_airport04_terminal
Dead Air Runaway Finale - changelevel l4d_airport05_runway
Blood Harvest Woods - changelevel l4d_farm01_hilltop
Blood Harvest Tunnel - changelevel l4d_farm02_traintunnel
Blood Harvest Bridge - changelevel l4d_farm03_bridge
Blood Harvest Train Station - changelevel l4d_farm04_barn
Blood Harvest Farmhouse Finale - changelevel l4d_farm05_cornfield
Versus Mode
No Mercy Apartments - changelevel l4d_vs_hospital01_apartment
No Mercy Subway - changelevel l4d_vs_hospital02_subway
No Mercy Sewer - changelevel l4d_vs_hospital03_sewers
No Mercy Hospital - changelevel l4d_vs_hospital04_interior
No Mercy Rooftop Finale - changelevel l4d_vs_hospital05_rooftop
Blood Harvest Woods - changelevel l4d_vs_farm01_hilltop
Blood Harvest Tunnel - changelevel l4d_vs_farm02_traintunnel
Blood Harvest Bridge - changelevel l4d_vs_farm03_bridge
Blood Harvest Train Station - changelevel l4d_vs_farm04_barn
Blood Harvest Farmhouse Finale - changelevel l4d_vs_farm05_cornfield

Play As Infected
Use the above ent_fire !self setteam 3 code, then after spawning and dying, press Jump until the camera changes into free roam mode, now use one of the following z_spawn codes:
z_spawn smoker
z_spawn tank
z_spawn boomer
z_spawn hunter