It's a patch fan-made by me that fixes some bugs and adjusts a few things for smoother gameplay.
You can download the patch from the fan discord server.
discord.gg/dvHTs82Fvk

Someone asked for a different place to host the file so you can get it on my GitHub:
github.com/ChemicalHorror/Throne-of-Darkness-patch-1.3.3

I only see 1.3.2 on the discord. Is 1.3.3 not available anymore for some reason?

Edit: Never mind - I found it deeper in the mods thread and not the files section.

Would it be possible to host the patch elsewhere as well for those who don't use Discord?