Here is the full list of all 14 Beasts Battle achievements.
Earn all stars.
Go Ridge Hero of a mage on Hard difficulty.
Complete the game for both races.
Go Ridge Hero of a warrior on Hard difficulty.
Complete the game in any race.
Lose 200 mana.
Apply 2000 magic damage.
Try hotseat mode.
Complete 10 levels in any race.
Spend 10,000 gold.
Apply 15000 physical damage.
Complete 5 levels in any race.
Apply 5000 physical damage.
Lose the 2000 health.