Codes for L4D2 (autoexc.cfg file) By Artic Lord

mat_antialias 0
mat_forceaniso 0
mat_hdr_enabled 0
mat_hdr_level 0
mat_picmip 0
mat_trilinear 0
mat_vsync 0
r_rootlod 0
mat_monitorgamma "1.6"

fps_max 0
fov_desired 90
cl_detaildist "0"
cl_detailfade "0"
cl_drawmonitors "0"
cl_ejectbrass "0"
cl_forcepreload "1"
cl_lagcomp_errorcheck "1"
cl_lagcompensation "1"
cl_downloadfilter "nosounds"
cl_ejectbrass "0"
cl_maxrenderable_dist 9999999
cl_phys_props_enable "0" 
cl_phys_props_max "0"
cl_show_splashes "0"
cl_smoothtime "0.01"
cl_smooth 1
commentary 0
lod_TransitionDist 0
mat_aaquality "0"
mat_autoexposure_max "0"
mat_autoexposure_min "0"
mat_bloomscale "0"
mat_bufferprimitives "0"
mat_bumpmap "0"
mat_clipz "1"
mat_compressedtextures "1"
mat_diffuse "0"
mat_disable_bloom "1"
mat_disable_fancy_blending "1"
mat_disable_lightwarp "1"
mat_disable_ps_patch "1"
mat_drawwater 0
mat_envmapsize "0"
mat_excludetextures "1"
mat_envmaptgasize "0"
mat_fastspecular "1"
mat_filterlightmaps "0"
mat_filtertextures "0"
mat_forceaniso "0"
mat_forcehardwaresync "0"
mat_forcemanagedtextureintohardware "0"
mat_framebuffercopyoverlaysize "0"
mat_fullbright 1
mat_hdr_enabled "0"
mat_hdr_level "0"
mat_hdr_manual_tonemap_rate "0"
mat_mipmaptextures "0"
mat_lightmap_pfms "0"
mat_maxframelatency "0"
mat_max_worldmesh_vertices "0"
mat_parallaxmap "0"
mat_queue_mode "0"
mat_reducefillrate "0"
mat_shadowstate "0"
mat_show_ab_hdr "0"
mat_showlightmappage "-1"
mat_showlowresimage 1
mat_specular "0"
mat_texture_limit "-1"
mat_trilinear "0"
mat_use_compressed_hdr_textures "1"
mat_showenvmapmask "0"
mat_showlowresimage "1"
mat_showmaterials "0"
mat_showmaterialsverbose "0"
mat_supportflashlight "0"
mat_wateroverlaysize "0"
mat_motion_blur_enabled "0" 
mat_motion_blur_percent_of_screen_max "0" 
mat_softwarelighting "0"
mp_decals "0"
muzzleflash_light "0"
net_maxfragments "1280"
net_maxfragments "1280"
net_showevents "0"
npc_height_adjust "1"
props_break_max_pieces "0"
props_break_max_pieces_perframe "0"
r_3dnow "0"
r_3dsky "0"
r_PhysPropStaticLighting "0"
r_WaterDrawReflection "0" //set to 1 if you like water reflection
r_WaterDrawRefraction "0" //this lets you see through water, set to "0" for black water
r_ambientboost "0"
r_cheapwaterend "1"
r_cheapwaterstart "1"
r_decal_cullsize "0"
r_decals "0" 
r_dopixelvisibility "0"
r_drawbatchdecals "0"
r_drawdecals 0
r_drawflecks "0"
r_drawmodeldecals "0"
r_drawmodelstatsoverlaymax "1.5"
r_drawmodelstatsoverlaymin "0.01"
r_drawparticles 1
r_drawspecificstaticprop "0"
r_dynamic "0"
r_eyeglintlodpixels "20"
r_eyemove 1
r_fastzreject "0"
r_flashlightrendermodels "0"
r_unloadlightmaps "1"
r_flashlightrenderworld "0"
r_flex "0"
r_forcewaterleaf "0"
r_lightaverage "0"
r_lod "8"
r_staticprop_lod "4"
r_maxdlights "0"
r_maxmodeldecal "0"
r_maxnewsamples "0"
r_maxsampledist "0"
r_minnewsamples "0"
r_mmx "1"
r_norefresh "0"
r_occlusion "0"
r_renderoverlayfragment "0"
r_queued_decals "1"
r_ropetranslucent "0"
r_shadowmaxrendered "0"
r_shadowrendertotexture "1"
r_shadows "0"
r_spray_lifetime "0"
r_sse "1"
r_sse2 "1"
r_staticpropinfo "0"
r_updaterefracttexture "0"
r_updaterefracttexture "0"
r_visualizeproplightcaching "1"
r_waterforceexpensive "0"
r_waterforcereflectentities"1"
rope_averagelight "0"
rope_collide "0"
rope_shake "0"
rope_smooth "0"
rope_smooth_enlarge "0"
rope_smooth_maxalpha "0"
rope_smooth_maxalphawidth "0"
rope_smooth_minalpha "0"
rope_smooth_minwidth "0"
rope_subdiv "0"
rope_wind_dist "0"

Codes for L4D2 (Video.txt file) By Artic lord

"VideoConfig"
{
	"setting.cpu_level"		"1"
	"setting.gpu_level"		"3"
	"setting.mat_antialias"		"1"
	"setting.mat_aaquality"		"0"
	"setting.mat_forceaniso"		"1"
	"setting.mat_vsync"		"1"
	"setting.mat_triplebuffered"		"0"
	"setting.mat_grain_scale_override"		"0.576000"
	"setting.mat_monitorgamma"		"1.6"
	"setting.gpu_mem_level"		"2"
	"setting.mem_level"		"2"
	"setting.mat_queue_mode"		"-1"
	"setting.defaultres"		"1366"
	"setting.defaultresheight"		"768"
	"setting.aspectratiomode"		"1"
	"setting.fullscreen"		"1"
	"setting.nowindowborder"		"0"
}

Codes for L4D2 (left4dead2.bat file) By Artic lord

left4dead2.exe -w 1366 -h 768 -novid -lv +mat_hdr_level 0 -high -nojoy -noipx

Note:- You have to create the .bat file or either Contact me