Here is the full list of all 16 The Superlatives: Aetherfall achievements.
Ace the training mission.
Save all of the Society members.
Protect London from the ultimate threat.
Keep the recruits together through the end.
Whom does the shadow serve?
Where do your loyalties lie?
Capture Dr. Eisengeist alive.
Romance the research assistant.
Romance the widower.
Romance the mysterious stranger.
Earn Arturek's loyalty.
Earn Nimble's loyalty.
Earn Black Orchid's loyalty.
Earn Tua's loyalty.
Earn Wailer's loyalty.
Earn Gatsby's loyalty.