The game did not hand out achievements. This should be fixed now.
(If this is still not the case, let me know.)
Achievements Fixed
Build and release context
Steam update times within 24 hours of this post. Matching dates do not confirm which build it describes.
Build 12918503 · public branch
Steam updated · First observed
Recorded Steam release date:
Within one calendar day of this post (UTC). The listed date does not establish an exact launch time.