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