Here is the full list of all 18 Fidget Spinner In Space achievements. It takes around 0-1 hour to unlock all of the achievements on Windows.
Collect 88 aliens head
Collect 47 aliens head
Play on blue planet map
Choose purple spinner
Collide with an two type of asteroid
Collide with an Russian UFO
Collide with an one type of asteroid
Collect 5 aliens head
Pick up first alien
Play on purple planet map
Choose green spinner
Start the game