Here is the full list of all 9 Girls Like Robots achievements. It takes around 15-20 hours to unlock all of the achievements on Windows.
Reach level 50 in Nerd Drop!
Leave no bonus unclaimed! WHAT'S IN THE BOX?!
Get gold medals in every level!
Finished Act 3!
Beat the final level without any (surviving) Space Seals!
Make 200 Girls happy while winning levels!
Finished Act 2!
Get 150 medals in your Bag O' Happy
Finished Act 1!