Here is the full list of all 60 Expeditions: Conquistador achievements.
Complete the game in Iron Man mode on any difficulty
Trade at every market in both campaigns in a single playthrough
Save Moctezuma Xocoyotzin
Turn against your allies in their hour of triumph
Return to Spain with 50,000 Valuables or more
Fully research all the possible inventions and construct one item of every possible recipe
Restore Fortaleza De Gutiérrez to its full glory
Recruit all 6 native followers in Mexico in a single playthrough
Kick an enemy into a burning or trapped space
Aid the escaped slaves
Find all the cairns and compile all the maps of Mexico
Kill Moctezuma Xocoyotzin
Kick off the battle for Tenochtitlan
Form a romantic relationship
Lose the first tutorial battle
Start the game with only women, as a female character
Complete the game on Normal difficulty
Complete the game on Hard difficulty
Complete the game on Insane difficulty
Return to Spain without losing any expedition members
Unlock all the Codex entries
Discover the Fountain Of Youth
Discover the Masaya Volcano tunnels
Discover El Dorado
Kill an enemy unit with a cannon blast
Win a non-tutorial battle without ever getting within melee distance of an enemy
Complete The Temple of Death
Rebuild Fortaleza De Gutiérrez
Deal more than 100 points of damage with a single attack
Inadvertently unleash smallpox on the population of Tenochtitlan
Sacrifice a member of your expedition
Achieve a Flawless Victory in an Escape battle
Recruit Anacaona for your expedition
Win a non-tutorial battle with only Scholars and Doctors
Discover Tenochtitlan
Capture Xochiyohua
Marry a native
Achieve fifteen Flawless Victories in a row on Normal or greater difficulty
Hit one of your own units with AoE damage
Win all three battles in the Tournament
Kill an enemy with an Interrupt attack
Cast off for the mainland!
Save Governor Bernardo De Manzanedo
Find all cairns on Hispaniola and compile all the maps of the island
Complete 5 side quests in Hispaniola
Attack and destroy a native settlement on Hispaniola
Complete The Gloaming
Experience a mutiny
Defeat Esteban Gallego
Nurse a Fatally Injured expedition member back to full health
Score a hit with a ranged attack with a 5% hit chance
Resolve the Jungle Drums goal without bloodshed
Revive an incapacitated unit and keep that unit alive until the end of the battle
Enter combat with six units at Veteran or higher rank
Have all your followers be disabled at the same time
Kill an enemy with a flanking strike
Enter combat with at least 25 points of Equipment assigned to a single unit
Promote a follower to Lieutenant
Make camp without giving any of your followers food
Recruit Isabela de Yruenes for your expedition