Those 3 achievements for Belial, Dagon and Moloch were visible for a short time today, maybe they're working on it.
If not, could you create a support ticket on the link in this post please?!

Edit: They were visible again today. Screenshot attached.

Sadly, I have the same problem :(

I can confirm that Belial, Dagon and Moloch are bugged.
Why there must always be problems. *facepalm* I will try to contact the developers, let's see what they say.

Yup. These 3 boss achievements are indeed bugged.

Is it still the case? Are the achievements still broken?

There has been no update since then so we can assume they are.

It's simply shameful that nothing has been done to fix this very simple bug, and after countless emails and attempts to contact THQ Nordic by me and many other people my patience is at its limit.

Having broken achievements is almost worse than not having them at all if they are not fixed. Personally, I don't think I'll be buying a single THQ Nordic game again until they fix all their bugs, and I'll be sure to let as many people as possible know about their ridiculous behavior.

Among other things, I've noticed other strange bugs present only in the GOG version that officially should have been fixed, but evidently weren't. If anyone has the game, can you check if the soundtrack plays during the end credits? Also has anyone ever had weird bugs in the Creature Core menu where they would disappear or you couldn't fill the slots?

Can confirm the credits bug. A damn shame too, since the credits song is absolutely awesome.

Didn't have an issue with the cores though IIRC.

Yeah, the credits song is great.

Anyway this confirms that the GOG version of Darksiders Genesis is not on par with Steam and all the other platforms, since this bug was officially fixed with the second patch. This is very worrying, because who knows how many other bugs haven't really been fixed.

THQ Nordic is proving to be really bad towards GOG users and I think this deserves a lot more attention.

I was wondering if I was the only one... turns out I'm not. Sigh... So annoying.

The fact that all 3 have a stat of 0.2% means that someone has actually unlocked them. I don't think this game sold so poorly that devs alone could make up the entirety of that 0.2%. Perhaps some older version of the game had these working?

The release of remastered Blade of Darkness on GOG made me think... BOD has one, very difficult achievement. For the first few weeks, nobody had achieved it. GOG always shows global percentages. That single achievement did not have any number at all, so we can interpret it as 0%. Eventually it changed to 0.1%, now it sits at 0.2%.

So what does this have to do with Darksiders Genesis? Well the 3 bugged boss achievements also have the statistic of 0.2%. That means somebody somewhere have achieved this. Originally I thought, perhaps it was the devs, using some kind of console command, but Blade Of Darkness' lower rating made me reconsider.

Is it possible that the bug exists only in the recent versions of the game? Has anyone ever tried to downgrade? I will try to go to the lowest available version and give it a go. That 0.2% came from somewhere and I do not think it came from the devs any more.

You're right, that 0,2% came from GOG support who unlocked these achievements for users who asked about it. I'm one of those users as you can see on the attached screenshot. :)

You mean we can ask GOG support to unlock broken achievements for us? I should give it a try then lol.