I may be a newbie on this forum but have followed for many years. For me the steam overlay would help me take the beautiful pictures of tifa's bootleg and upload them as screen shots of the final fantasy 7 community of steam. This might also increase sales of ff7 for people wanting to play ff7 the way mine works/looks. Yes you can print screen and take pictures that way, but it seems abit troublesome to print screen paste save trick steam into thinking i took the screenshot as the ff7 steam version.
I tried making tifa's boot loader -> launch steam -> launch Final Fantasy 7 through steam -> enjoy tifa's mod. I cant tell which ff7 exe tifa's bootloader uses or trick windows by renaming a symbolic link of steam.exe as ff7.exe. This also presents a problem. If i get the process to behave like I want, will tifa's bootloader accurately apply the external mods of the project into ff7.exe?
As far as achievements, look up steam achievement manager I dont recommend this, but if you're an achievement whore like myself use this when you know you should've unlocked the achievement if you used the modded ff7. Just don't be stupid with it, research it.