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