Hello there !

I recently realized GOG's version of "Haven" sported 31 achievements ; 1 more than Steam's... and actually all those I could learn about. Having (without much difficulties) accomplished all of the 30 achievements listed everywhere, I was also surprised to read that the 31th was deemed "legendary" - all the others are "uncommon" or "rare" at worst - and, even more curious, isn't even given a (general) percentage of success - an oddity which could indicate some kind of bug, since you're always supposed to see how much people already unlocked an achievement.
After a bit of search, I found one (and only one) mention of that remaining secret : https://www.exophase.com/achievement/haven-gog/31939-happily-ever-after/ . Funnily enough, it's tied to an unique (and non-reproductible) story event - no spoilers here ! - which seems quite hard to miss. I don't even know if you can miss it, except if 1) you've finished the game so fast the concerned dialogs didn't actually occur or 2) that achievement only unlocks in case of very specific answers during those - a rather improbable explanation, considering how easy-going all the others are with the player.

So I'm writting this for two reasons :
1) Just so any other concerned player may find at least one bit of information regarding that matter.
2) To ask whether or not any other player actually managed to grab that achievement or, in any case, to achieve a 100% completion state on "Haven".

Cheers !

Hi,

The thirty-first achievement has been deleted since. It was not meant to be released in any platform but somehow it was remaining in GOG. So now that it is fixed, you can have a 100% completion!

Cheers,
TheGameBakers.

Thanks a lot for the answer (and your great game !). Gog's support was flummoxed and thought it was some kind of meta-achievement only unlocked once every other one had been obtained... But yes, this has corrected since then on my account - just so anyone else knows it can be done. 100 % feels a lot better than 94 %, mind you :D !