Here is the full list of all 20 Avaris 2: The Return of the Empress achievements.
You won your first battle
You killed an enemy commander for the first time
You recaptured 10% of Avaris territories
You recaptured 30% of Avaris territories
You recaptured 50% of Avaris territories
You recaptured 90% of Avaris territories
You cleared a game by recapturing all territories
You successfully cleared the game a second time
You successfully cleared the game a third time
You successfully cleared the game a fourth time
You acheieved 1000 Best Empress Exp in one battle
You acheieved 1300 Best Empress Exp in one battle
You killed 100,000 enemy soldiers
You killed 200,000 enemy soldiers
You killed 300,000 enemy soldiers
You killed 350,000 enemy soldiers
You killed 400,000 enemy soldiers
You have achieved an honorable score
You have achieved a very impressive score
Congratulations on a spectacular score!