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