Here is the full list of all 22 Etrian Odyssey HD achievements.
Obtained more than 250,000 Ental.
Defeated an Yggdrasil Bud, Yggdrasil Sprout, and Yggdrasil Clover.
Reached the Sixth Stratum.
Defeated the Etreant.
Completed the quest "The bandit's treasure".
Reached the Fifth Stratum.
Retired an adventurer.
Let an adventurer rest.
Defeated a boss in a single turn.
Dealt 1,000 damage with a single hit.
Unlocked the Hexer class.
Reached the Fourth Stratum.
Unlocked the Ronin class.
Reached the Third Stratum.
Reached the Second Stratum.
Reached the First Stratum.
Obtained all other achievements.
Defeated the boss of the Sixth Stratum on Expert difficulty.
Defeated the Yggdrasil Core.
Defeated the Wyrm.
Defeated the Drake.
Defeated the Dragon.