I'm having issues with Achievements not popping for the Halo MCC. (Steam)
I've followed the steps provided (Using the provided mcclauncher.exe, Launching the game, running & using the Achievements Enabler & the also trainer for the correct subgame.
The trainer works fine for me in-game, but I'm not getting achievements. Achievements pop fine for me if I run the game normally.
They seem to be tied to EAC now, the enabler may no longer work and will most likely be retired soon if that is the case.