Up until the other day none of my achievements unlocked for phantom liberty which makes going back to get some of them impossible without restarting. Anyone else expericing this?

I'm encountering this, yes. I was initially thinking I just hadn't done what I needed to do to get All the President's Men, but looking back, I probably should also have Arachnophobia and Judgement Day.

I've also got some achievements doubled in my list. Easy Come, Easy Go is showing up twice - once with just "Legendary", the other with "Legendary - 0.4%".

And of course, the original achievements are all generic trophy icons instead of the custom icons for each achievement.

I tried checking for updates to the game and updates to GOG Galaxy, but nada.

Edit: Looks like some folks on Steam are having the problem, too.
https://steamcommunity.com/app/1091500/discussions/7/3878218962827815893/

i unlocked all the achivement i supposed to unlock, but yes every achivmenet is enlisted twice, i got the "save president meyers" unlocked but also i have another entry saying i didnt unlocked it. All achivement is doubled
I started playing it later so ithink they fixed the "not unlocking achivement" by simply adding another set of achivement. thats why they are doubled

That's an interesting way to try to fix the issue. I guess I can test that by doing a few more missions for El Capitan. I think I'm at maybe 7 or 8 vehicles returned to him.

I just wanted to add that when update 2.0 reached my Epic installation of the game, I booted up my latest save, right after finishing the game for the first time (Aldecados ending), and it started giving me a lot of achievements that I had unlocked but did not trigger correctly.

Later, upon closer inspection, I noticed that quite a few that I didn't do unlocked (like the Takemura revenge achievement) while a couple I did didn't (The one from stealing the Relic and the one for completing River's story).

Too bad I don't have a save right before ending River's last mission anymore. The one from the Relic is easy if I have the patience to go through the early game again.

I also don't have Phantom Liberty yet. Maybe in the future.

I too have all achievements unlocked, but there are duplicate ones listed for each one that are listed as not achieved, so my completion % is stuck at 82 in the gOg app. WTB a fix.

I've not had any issues until recently. For some reason I cannot unlock "The APB is Not Enough" despite meeting all the reuirements. All of the other achievements, DLC or otherwise, have worked fine for me.