Save file location - C:\Users\YOURUSERNAME\Documents\Horizon Forbidden West Complete Edition\YOURSTEAMNUMBERS
Last and easiest challenge to finish - shoot off energy cells. Any bow in my inventory can do it. After that, I suposse, achievement should unlock.
Also, based on the comment section, with one save you can unlock all achievements that I already unlocked at that point. I would recomend you to use my save file once you are done with the rest of the achievements or you dont care about them that much.
Last and easiest challenge to finish - shoot off energy cells. Any bow in my inventory can do it. After that, I suposse, achievement should unlock.
Also, based on the comment section, with one save you can unlock all achievements that I already unlocked at that point. I would recomend you to use my save file once you are done with the rest of the achievements or you dont care about them that much.