Here is the full list of all 46 Sorcerer King: Rivals achievements.
Play for 100 hours
Win 20 "predicted defeat" tactical battles without taking damage
Destroy one of the Sorcerer King's Strongholds
Slay Aegethon
Win as the Tyrant
Win as the Priest
Win as the Tinkerer
Win as the Guardian
Play for 40 hours
Channel the focus of your Magic between Mana, Lore, and Sovereign Skill
Win as the Wizard
Win a game on Insane Difficulty
Slay Vetrar
Defeat Nabunihr
Win as the Commander
Kill an enemy with a pioneer attack
Win as Undead
Achieve Ascension Victory
Complete the Campaign
Win a game without a single shard destroyed
Win as Frozen Realm
Defeat Corvos
Defeat a Minor Faction that has sided with the Sorcerer King
Reach level 15 with a champion
Defeat Abeix
Play for 15 hours
Found 5 additional cities in a single game
Ally with a Minor Faction
Complete a Champion Quest to recruit a new Champion to your cause
Get a city to level 9
Play for 5 hours
Win a "predicted defeat" tactical battle
Win a "predicted defeat" tactical battle without taking damage
Settle a new city
Equip a champion with items in every slot
Use the Sovereign's magic to intervene in a tactical battle
Use pioneers to upgrade an Outpost
Get a city to level 5
Use a pioneer to build an Outpost
Lower the Doomsday Counter
Reach level 5 with a champion
Build your first city improvement
Win a tactical battle
Complete a Quest
Claim a Shard
Craft an item