Hello I'm not sure if this is the right place, but is not an actual in game bug, if it is please point me to the right place.

I bought Endless space 1 and 2 on GoG storefront. I have noticed that some achievements are unlockable there.
Pretty obvious in ES_1 are "Big bag of Tricks", "Three little pigs" and "Using the Tools". There are more and all of them are battle related, ground or space.
In ES_2 "88MPH!!!", but I didn't try to unlock it personally, just looks pretty easy to unlock.
I can write them all down here if needed, but they can be easily spotted by missing unlock percentage, just "Legendary".

Link to GoG forum discussion: Are some achievements broken?

Hey,

Thanks for the report.

The complete list of achievements that don't unlock would be helpful, if there's anything to add beyond what is discussed in the GOG thread.

Thank you very much :)

If you've noticed missing achievements like "Big Bag of Tricks" in Endless Space 1 and "88MPH!!!" in Endless Space 2 on GOG, you might want to reach out to the official forums for those games. Share your observations there, and the community or developers may provide insights or solutions.

From time to time GoG frontend "bugs" and shows the secret achievements. This time I was quick and was able to snap a screenshot.

I was able to unlock all other. Those are what is left. The list is exactly what was previously stated.

Thanks for the additional info