Not only I made all of the side activities for achievs but I'm also made it through the game but doesn't get any of the achievs, even for the bosses.
How it can be fixed?

Are you aware that this game does not offer overlay support and therefore the achievements won't be shown in game at all? You will have to look at the list in Galaxy to see if you unlocked some.

I looked there - no, there wasn't any. I have 0% on the game's page.

That is strange. Then again I am on my third playthrough and the one that shgould unlock after finishing the secind playthrough did not unlock. So maybe the achievements are in fact broken.