Here is the full list of all 18 Quarantine Circular achievements.
Completed the first sequence.
Completed the second sequence.
Completed the third sequence.
Completed the fourth sequence.
Completed the fifth sequence.
Completed the sixth sequence.
Made a pragmatic choice.
Made a selfish choice.
Made a kind choice.
Made a predictable choice.
Made a deal.
Made a selfless choice.
Made a balanced choice.
Made an individual choice.
An engineer gave an alien a chance.
An engineer decided to be careful.
An alien and a Professor found common ground.
An alien and a Professor kept it strictly business.