UABE VS KlakSpout

If you're lucky, the developers will have used a standard format to store their assets and you can just use an existing asset extractor to do the dirty work for you: Unreal, Unity, and Flash (.swf) are some of the most popular ones.

I don't understand a single word but Unity Assets Extractor - https://github.com/SeriousCache/UABE/releases/tag/v3.0-beta1

Maybe this: https://github.com/SeriousCache/UABE/releases/tag/v3.0-beta1 (I would download the 64-bit if you created a 64-bit Wine bottle).

Modding UAD is a bit of a hassle. You need an Asset Bundle Extractor to open the resource.assets file. This is the one I use/ was shown Then export specific files to .txt files and edit them with a program like Notepad ++.

The fonts are stored in Unity AssetBundles, which are a huge pain to edit, but I think they should support non-standard letters (you can always try putting some in a line you know vs. a line containing only standard ones, and see if anything breaks). Likewise, some of the UI text (for example, loading screen tips, and the [E] Use etc. keybinds) is stored in an additional English or Russian localization file bundled inside Pathologic_Data\resources.assets. You'll have to use a tool like UABE to find and export either "english.txt" or "russian.txt" from this asset bundle, edit that text file, and then use UABE again to replace the file within that bundle.

I think they’re Unity asset bundles, so something like this might help, but I don’t really know: https://github.com/SeriousCache/UABE

A quick google search (Unity video stream. Everything is on google if you look hard enough) returns this open source plugin that might help.

After thinking about it a bit more, perhaps KlakSpout might be a better option. I haven't tried it, but Keijiro is a superstar.