The following is the list of achievements that can be earned in the Steam version of 80 Days.
Journey Related Achievements
Completed Trip - Traveled all the way around the world
80 Days - Completed trip in 80 days or less
70 Days - Completed trip in 70 days or less
60 Days - Completed trip in 60 days or less
50 Days - Completed trip in 50 days or less
40 Days - Completed trip in 40 days or less
20 Cities - Visited at least 20 cities in a single trip
30 Cities - Visited at least 30 cities in a single trip
No Banks - Traveled all the way around the world without using a bank
No Hotel - Traveled all the way around the world without using a hotel
As Far As The Moon - Travelled over 239,000 miles in total
Quest Related Achievements
All links in this section will contain spoilers on how to complete these achievements!
The World's Fair - Visited the World's Fair in Paris
Take That Varmint - Knock out Jesse James
Lightweight Champion - Become an American boxing champion
The Ocean Floor - Walk the ocean floor
Saved from the Noose - Save a man from hanging
Aboard the Kahwoka Othunwe - Traveled across the northern wastes aboard the Floating Reservation
Under the Sea - Travel beneath the ocean waves with a certain infamous Captain
Crack the Case - Bring a murderer to justice using your powers of deduction
He is Lost! - Have Monsieur Fogg die
From the Earth to the Moon - Launch for the Moon!
Despair in Vienna - Ruin the life of a man of Vienna
Turn The Tide of War - Aid the Belgrade resistance
Love in the Ice - Reignite love in the frozen North
A Life of Crime - Embark on a life of crime in the company of the world's greatest jewel thief
Flying High - Become intimate with an airship
Love in London - Find true love waiting for you on your return to London
The Artificer's Rescue - Save an Artificer and her device from falling into the wrong hands
The Greatest Treasure - Enter the secret vault of the Artificers
The Summit of Mount Elbrus - Visit the secret observatory of Mount Elbrus
A Career in Journalism - File a news story in the Times
Betray a Soul - Betray a living being to the Didacian nuns
A Night In the Ruins - Spend the night in Machu Picchu
Barrelling Forward! - Go over Niagara Falls!
Journey to the Centre of the Earth - Descend into the heart of the Earth itself