Here is the full list of all 33 Ravenland achievements.
Upgrade a building in city
Defeat an elite monster on day 1
Reach 5 insanity
Finish a day with full life
Earn 10 soulgem in a single day
Complete the game on normal
Reach a deck size 30 or more
Kill a thorny monster with thorn damage
Finish a turn with empty hand and with 0 energy
Upgrade a card to tier3
Increase difficulty to 5
Gain 3 stack poision from enemy
Increase a non-boss growing monster attack to 6
Reduce a ratling attack to 0
Kill an enemy with bleeding
Reach 5 might
Raise golem's damage above 10
Be defeated
Acquire a treasure card
Finish a fight with full life
Reach 10 experience on first day
Complete the game on hard
Survive a battle with 3 or less life
Defeat a mimic
Reach a deck size 20 or more
Deal at least 20 damage with a card
Use duplicate on the insanity card
Discard a card with 5 energy or more with the hero skill
Reduce an enemy's life excatly to 0 with an ally attack
Complete 5 swordsman challange
Complete 5 monk challange
Complete 5 stone guard challange