This is pack of AI upscaled textures for XIII Classic. Installation: unpack "textures" and "system" into Your XIII Classic main folder. For steam by default it's C:\Program Files (x86)\Steam\steamapps\common\XIII - Classic Screenshots folder includes some comparsion material before and after.
Updated version 1.1 fixed all textures settings, played through whole single player campaign to test and didn't find any bugged textures. If You find any bugs feel free to leave feedback :)