No steam achievements

[Mackhdo]

So i played the demo, loved it.
I bought the game, saw on the store page that there were fourty something achievements.
But on my game there is none, help please ?

I can send some screenshots if necessary.
Is it because i played the demo before ? some kind of related bug ?

EDIT : Solved, it was surely because i played the demo right before.
I just restarted steam and achievements are here.

Maybe leave the post in case someone have the same problem ?