Have fun not being able to see your character, or his arrow for that matter.
!!!MAKE SURE TO BACKUP YOUR EXISTING TEXTURE FILES!!!
Place textures in the IMG folder inside your root Titan Souls folder.
For GOG users it will be C:/GOG Games/Titan Souls/IMG
For Steam users it will be C:/Program Files (x86)/Steam/steamapps/common/Titan Souls/IMG