Here is the full list of all 33 Might & Magic Heroes VII achievements.
Complete Stronghold campaign map 4
Complete Stronghold campaign map 3
Complete Ivan's campaign "A Firebrand in the Dark" map 2
Complete Ivan's campaign "A Firebrand in the Dark" map 1
Complete Fortress campaign map 6
Complete Fortress campaign map 5
Complete Fortress campaign map 4
Complete Fortress campaign map 3
Complete Fortress campaign map 2
Complete Fortress campaign map 1
Complete Dungeon campaign map 4
Complete Dungeon campaign map 3
Complete Dungeon campaign map 2
Complete Dungeon campaign map 1
Complete Sylvan campaign map 4
Complete Sylvan campaign map 3
Complete Sylvan campaign map 2
Complete Sylvan campaign map 1
Complete Stronghold campaign map 2
Complete Stronghold campaign map 1
Complete Academy campaign map 4
Complete Academy campaign map 3
Complete Academy campaign map 2
Complete Academy campaign map 1
Complete Necropolis campaign map 5
Complete Necropolis campaign map 4
Complete Necropolis campaign map 3
Complete Necropolis campaign map 2
Complete Necropolis campaign map 1
Complete Haven campaign map 4
Complete Haven campaign map 3
Complete Haven campaign map 2
Complete Haven campaign map 1