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