Installation Video Here
First :
Need To do This so no more BlackScreen Crash
Launch game without Texmod so Steam can install the Nvidia PhysX engine.
copy all files (C:\Program Files (x86)\NVIDIA Corporation\PhysX\Common)
Paste them to Game Folder (C:\Program Files (x86)\Steam\steamapps\common\Way of the Samurai 4)
Second :
1. Download Texmod
https://www.moddb.com/downloads/texmod4
2. Rename WayOfTheSamurai4.exe to WayOfTheSamurai4_REAL.exe or whatever suits you.
(C:\Program Files (x86)\Steam\steamapps\common\Way of the Samurai 4)
or
(C:\GOG Games\Way of the Samurai 4)
3) Rename Texmod.exe to WayOfTheSamurai4.exe and place it into your Way of the Samurai 4 directory.
4) Launch your renamed Texmod.exe with either Steam or your GOG shortcut.
5) Select Target Application and select your renamed WayOfTheSamurai4.exe
6) Select the folder icon and select your mod and click "Run".
7) In case you get black squares for letters try disabling "Draw Control and Texture Info" in "Logging Mode" then go back to "Package Mode".
FINISH!