I actually made up some win/fail texts myself! I'm still working on them, and I only have enough based on which expansions I have at the time of this writing, but it could be of use to you for at least the base game (and Yig)! Give it a look too, it may have updated since I posted it here. If anyone else wants to add something, feel free to suggest it! I wrote win/fail conditions for each eldritch horror as well as win conditions for their individual mysteries as well!