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