Here is the full list of all 37 Sakura Dungeon achievements.
Reassemble the state of Fortuna.
Find every outfit in the game.
Defeat Izanami.
Defeat Hiriko.
Recruit the Ryuuou into your party.
Discover the fox girl's ship.
Defeat the dungeon lord.
Recruit the Spirit Guardian into your party.
Defeat Yomi.
Win your second battle against the succubus.
Recruit the Reaper Twins into your party.
Step into the Abyss.
Defeat the reaper twins.
Recruit the Queen Bee into your party.
Recruit Anubis into your party.
Recruit the chocolate mimic into your party.
Make the observatory operational again.
Recruit the Sand Sentinel into your party.
Acquire the warp gem.
Collect 10 outfits for your wardrobe.
Defeat 1,000 enemies.
Give Anubis an offering of milk.
Avoid an assassination attempt.
Recruit Maeve into your party.
Use Yomi in your party.
Acquire the Astral Blade skill for Ceri.
Recruit Sylvi into your party.
Clear the first floor of the dungeon.
Defeat the first floor guardian.
Drive away the warrior from the shop.
Find all of the swimming wear outfits.
Acquire the Dual-Soul ability for Yomi.
Recruit Captain Bonny into your party.
Defeat 2,500 enemies.
Defeat 5,000 enemies.
Win the game on hard mode.
Win the game on abyssal mode.