Whenever I made a new character I noticed that Shady Sands shares the same timer with the Hub for the "Boxes Lifting" quest.
So instead of waiting for the 30 minute timer two times give Shady Sand it's own timer so the achievment can be obtained after two Hub>Boneyard>JT>Shady Sands>VC rotations.
Although you can do both if you start quest in say Hub, do the one in Shady then return and complete the one in Hub.