Here is the full list of all 40 Driftland: The Magic Revival achievements. It takes around 20-25 hours to unlock all of the achievements on Windows.
Win a Human Campaign
Build 1000 bridges.
Win a Dark Elf Campaign
Make your Heroes tame 50 flying beasts.
Have 100 of enemy Heroes killed in total.
Recruit 100 Heroes in total.
Discover 100 resources with Geology.
Win a Multiplayer Game
Win your 25th Single Player game as Dark Elves.
Win your 10th Single Player game as Dark Elves.
Open 200 treasures.
Win your 5th Single Player game as Wild Elves.
Win your 3rd Single Player game as Wild Elves.
Win your 1st Single Player game as Wild Elves.
Win your 5th Single Player game as Dwarves.
Win your 3rd Single Player game as Dwarves.
Win your 1st Single Player game as Dwarves.
Make your Heroes tame 5 flying beasts.
Win your 25th Single Scenario as Humans
Win your 10th Single Scenario as Humans.
Win your 5th Single Scenario as Humans.
Build 100 bridges.
Complete the Tutorial.
Recruit 10 Heroes in total.
Win your first Single Player game.
Win your 5th Single Player game as Dark Elves.
Build 100 structures (bridges not included).
Discover 10 resources with Geology.
Create an Empire of at least 20 islands.
Open 20 treasures.
Build 10 bridges.
Build 10 structures (bridges not included).
Recruit 1000 Heroes in total.
Open 2000 treasures.
Make your Heroes tame 500 flying beasts.
Build 1000 structures (bridges no included).
Discover 1000 resources with Geology.
Win a Dwarves Campaign
Unlock the Final Campaign
Win the Final Campaign