Useful L4D2 commands

[Zombi]

some useful non-cheat commands you can use

cl_ragdoll_limit "0"          // dead infected are removed more quickly
func_break_max_pieces "0"     // sets explosion pieces to 0
r_skyboxfogfactor "0.0"       // Lerp between 2D skybox rendering and fog color.  0.0 means regular 2D skybox rendering, 1.0 is fully fog color.
mat_monitorgamma "2.6"        // brightness default 2.2  min 1.600000 max 2.600000

All except the skybox command are already in the default config.cfg file in C:\Program Files\steam\steamapps\common\left 4 dead 2\left4dead2\cfg so you just edit those with notepad, and add the skybox command onto the end

Also add the following to your launch options (Right click, Properties, Set Launch Options)

-nojoy -console -dev -novid -lv

-nojoy prevents game looking for joypads (faster load up time)
-console enables console
-dev enables developer mode which outputs console onto screen in white writing and gives ALL errors in maps/game and also helpful for finding names of textures/models etc, delete this if you find white text too distracting when playing
-novid stops the intro videos playing (faster boot)
-lv short for Low Violence mode, dead bodies disappear almost straight away, there's hardly any blood splatter/mess flying limbs. Also gives up to 40%! more fps according to one report. Also makes special infected bodies disappear fast.(some players are forced to play in this mode)