How to import downloaded save files

Hey SG,

So it's been almost 9 months since I converted to Lord GabeN, and I can't wait for my first summer sale.

I managed to learn a lot of tricks in those 9 months to enhance my gameplay on steam and PC in general. I only have one problem though, how can I import downloaded save files to games? Do I have to put them in the steam folder or the general windows folder?

This is my current problem.
I Just completed Batman Arkham Knight on PC, but to get to the "true ending" I have to get all Riddler trophies in the game, which is very hectic and gets kind of boring. So there is a save file online that can gets all trophies except one, so I can easily see the "true ending". I want to learn how I can import the downloaded save file to the game. There are 4 save slots in the game, if possible I want the imported save file to take the second slot, so I don't have to overwrite my actual game play. Any extra help would be much appreciated, thanks in advance!

Sorry no gibs here

I found a guide with steps on how to do it for the specific game, will see how it goes