Here is the full list of all 34 Moonscars achievements.
Unlock all achievements.
Complete the story of Grey Irma.
Bid Ion the last farewell.
Face Queen Yadwiga after her enthronement.
Slay Red Irma and cleave the Moon.
Help Etalag survive to the finale.
Receive all gifts from little Adelinka.
Kill 5 foes in less than 3 seconds.
Receive help from the spared doppelganger.
Maximize Ichor Gauge.
Bring to old Horpyna clayborn child.
Bring Her anger upon hermitess Karina.
Meet Yarema's mould.
Discover all Special Weapons.
Slay Cruel Lajos of the Pristines.
Maximize regular weapon damage.
Maximize Health Gauge.
Listen to all stories of the mad clayborn.
Slay Sweet Wanda of the Pristines.
Slay the friendly doppelganger.
Learn a witchery of greatest power.
Alleviate Moonhunger for the first time.
Slay Gniewko, the Royal Infant.
Fall under Moonhunger for the first time.
Spend 10 Ichoral Glands.
Parry 50 attacks.
Slay Traitor Chokran of the Pristines.
Die 10 times (and do not fall into despair).
Kill 25 foes with status effects.
Throw 25 foes onto spikes.
Equip gemstones into all available slots.
Stun 50 foes.
Slay the first doppelganger of Irma.
Cast the very first clayborn mould.