Blue&Black Katana

Place the vpk file to addons map

OR

1.)place the materials folder to C,D:\Program files\steam\steamapps\common\l4d2\l4d2

2.)Open your pak01_dir.vpk(with notepad++) search for:

$baseTexture "models\Weapons\melee/Katana" change to: $baseTexture "models\Weapons\melee/batana"

3.)under the previous:

$bumpmap "models\Weapons\melee/katana_normal" change to: $bumpmap "models\Weapons\melee\batana_normal"