Hi guys, hope you can help me and I'm not repeating something already asked; I have successfully complete The Shrieker contract but it isn't showing up as a gained achievement on my list here on Galaxy. Is there something I haven't done? All the other items I've completed off line have shown up but not this. Thoughts?

Well, it does appear to have registered my first five achievements and at least three of these were achieved off line and the cloud sync once I came back has logged them.

Okay,as Galaxy is still beta then it's possible you need to be on line
for all achievements to record.Which would mean a small bug as it's
still being worked on.

The current state of achievements in the Galaxy beta is that they are a work in progress and not reliable currently. I completed the entire game now and several contracts I completed did not grant me the according achievement in Galaxy (just an observation, I don't care either way personally). I reported a bug message about it on the GALAXY BETA thread if anyone wants a list of broken achievements that I at least encountered.