I got the exegesis achievement

[ErstO]

Started a new game just to get the Happy February 12th achievement and timed it to complete it on March 2nd

Not that I’m an achievement hound, I still haven't got the characters achievement and I’m not going back for it.

I first played this about eight months ago, but it was an enjoyable enough story to play it again, and that's high praise for a walking sim.

[Mouse]

Late reply, but if you're talking about
Talk to all NPCs achievement.

It's not possible to obtain "legally".

So basically you've finished the game as much as you can, anyways congrats!