Hi kabili207,
Thanks for checking in! The two versions are actually completely in-sync with each other - the gotcha is that the "last updated" date on the Play Store can refer to the last time the listing was updated and not just the build itself. The key to confirming this is the version name: if you go into Settings --> Apps --> Eufloria HD, you'll probably see that the version name is 1.0.12hb for the HB version; on the Play Store you'll see that the version name for the live Google Play version is 1.0.12 as well. If you don't see 1.0.12hb for the HB version, you'll need to download the latest version from your Humble Bundle download page or Android app. It looks like for Eufloria HD that the listing was updated more recently than the build was - hope that this clears things up for you! Google Play achievements in the HB version should be accessible via the main menu once you log in to G+.
Cheers,
Apportable