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