The Legacy of the Moonspell Add-on for Vampire Survivors has 18 achievements.
Survive 15 minutes with McCoy-Oni.
Evolve the Mirage Robe.
Survive 15 minutes with Babi-Onna.
Find the Mt.Moonspell Map.
Survive 15 minutes with Syuuto.
Evolve the Summon Night.
Evolve the Four Seasons.
Defeat 100000 enemies in a single run with Menya.
Survive 15 minutes with Menya.
Survive 15 minutes with Miang.
Evolve the Silver Wind.
Find and open the coffin in Mt.Moonspell.
Evolve the Night Sword.
Defeat the Orochimario in Mt.Moonspell.
Find a Night Sword.
Defeat 100000 enemies in a single run with Syuuto.
Defeat a total of 6000 Kappa.
Evolve the Mille Bolle Blu.