Here is the full list of all 34 Dragon Marked For Death achievements.
Reach character level 50.
Reach the ending as the Oracle.
Defeat 200 Watchers.
Defeat 10 Knights.
Reach the ending as the Warrior.
Defeat Vasith.
Defeat 20 Mimics.
Reach character level 30.
Defeat the Lycanthrope.
Clear 25 different quests.
Defeat 10 Hermit Kings.
Have 100000 gold at once.
Defeat Jinryu.
Defeat 10 Deva Slimes.
Clear 10 different quests.
Use 100 restorative items.
Defeat 20 Bombuds.
Defeat Cthulhu.
Reach character level 10.
Defeat 20 Tough Chicks.
Defeat the Ogre Prince.
Defeat Equus.
Buy items at shops 100 times.
Sell items at shops 100 times.
Exchange for items at the Black Market 30 times.
Use 10 pieces of Dragonite.
Reach the ending as the Empress.
Reach the ending as the Shinobi.
Reach the ending as the Witch.
Reach the ending as the Bandit.
Reach the True Ending (any character).
Defeat a Named Monster.
Defeat 20 Purplants.
As the Empress, drop 10 pieces of edible fruit from trees.