Here is the full list of all 35 Desecration of Wings achievements.
Reach endgame with an average party level below 20.
Have Felana prove her mastery of her profession.
Reach the true ending.
Defeat all post-game optional bosses.
The abomination within the tower.
Find all the treasure in the game.
Survive the Dragon's Tower.
Find enough Contorted Stones to finish the altar.
The abomination of the labyrinth.
Forge the ultimate heavy armor.
The abomination along the shore.
Play the greatest minigame of all time.
A lost soul near where it all began.
A horror lurking in Mondeville...
Truly a worthy opponent.
The evil within a prison of ice...
The evil within the depths of the forest...
Defeat the monster of the ice tower.
Reach the normal ending.
Defeat all missable optional bosses.