I seem to be incountering a small issue with the endless hallway character trying to pull up my user data whenever I enter the game, even after deleting "firstrun" file, which is a problem as due to me playing on joiplay, it cannot access that data, thus causing the game to instantly crash whenever I start it, is there any other files I can remove or create to stop this or do I just need to redownload and recomplete the game?

I have no experience with joiplay so i cannot speak with any certainity to a fix to this and i dont know if this bug has been raised to the attention of Cinna but i'll make sure it is, but in the meantime, one thing you might try is seeing if uploading your savefiles (including the config and globals) and having someone not on joiplay load them and see if that allows for the game to get past the issue you are stuck on, honestly im not sure which file it's calling out to when it has to flag what phase of the interruption by Unknown that it has to be at but i'd think one of the files in your saves folder is a safe bet.