Here is the full list of all 53 Demon Mark: A Russian Saga achievements.
Survive on your journey beneath the earth.
Feed emeralds to the Indrik Beast.
Befriend the Grey Wolf.
Become close to your family.
Return Koschei's Death to Marya Morevna.
Befriend the bogatyr Marya Morevna.
Refrain from stealing from Koschei's treasure hoard.
Get an ever-full plate of kasha from Baba Yaga.
Solve the riddle in Koschei's fortress.
Befriend the bogatyr Svyatogor.
Stay awake to the end of Svyatogor's long story.
Get Lena and Svyatogor back together.
Befriend the bogatyr Ilya Muromets.
Collect good vegetables for Baba Yaga's stew.
Help Baba Yaga make a nice dinner—that doesn't include you as the main course!
Bring Baba Yaga a bucketful of water.
Clean Baba Yaga's sheets.
Play as a Chukchi.
Play as a Nogai.
Play as a Khanty.
Play as a Saami.
Play as a Nivkh.
Play as every ethnicity.
Become good friends with your animal companion.
Befriend the bogatyr Alyosha Popovich.
Meet the bogatyr Dobrynya Nikitich.
Befriend all of the bogatyrs.
Encounter the leshii behind Baba Yaga's hut.
Defeat Dubynya, a strong dragon from Zmey Gorynych's brood.
Defeat Gorynya, a smart dragon from Zmey Gorynych's brood.
Defeat Zmey Gorynych in combat.
Defeat all the dragons in Zmey Gorynych's brood, including himself.
Impress Zmey Gorynych so much that he helps you on your quest.
Discover the mysterious, perfectly round, disappearing quarry.
Befriend everyone at the crossroads.
Peer into the abyss and catch a glimpse of the horrible Chudo Yudo.
Find the magical hat in Koschei's fortress.
Find the magical gauntlets in Koschei's fortress.
Find the magical handkerchief in Koschei's fortress.
Keep Koschei's Death for yourself.
Defeat Koschei with Zmey Gorynych's magical amulet.
Feed rubies to the Indrik Beast.
Feed sapphires to the Indrik Beast.
Befriend the Lady of the Mountain.
Face three of Uhin's challenges.
Face four of Uhin's challenges.
Face five of Uhin's challenges.
Pass five of Uhin's challenges and survive your encounter with her.
Face and defeat Uhin.
Settle down with your family at the end of the adventure.
Take your place at the Tsar and Tsaritsa's right hand at the end of the adventure.
Go searching for The Thing That No One Can Find in Whereabouts Unknown.
Befriend or impress every character in the game.