Here is the full list of all 26 Shadow Gambit: The Cursed Crew achievements.
Finish Act 1.
Set sail with the Marley for the first time.
Discover all islands.
Collect all of Mordechai's Relics.
Finish Act 2.
Finish your first Captain's Test.
Finish Act 3.
Get 10% overall completion.
Get 20% overall completion.
Get 30% overall completion.
Get 40% overall completion.
Get 50% overall completion.
Get 60% overall completion.
Get 70% overall completion.
Get 80% overall completion.
Unlock all characters.
Unlock your first skill upgrade.
Unlock all skill upgrades.
Finish Suleidy's Crew Tale.
Finish Toya's Crew Tale.
Finish Pinkus' Crew Tale.
Finish Quentin's Crew Tale.
Finish Gaëlle's Crew Tale.
Finish Teresa's Crew Tale.
Finish John's Crew Tale.
Unlock Virgilio.