Here is the full list of all 28 Vampire's Fall: Origins achievements.
Bite Sava Savanovic
Complete the expansion "The Hunt for Sava"
Complete the brutal mazes
Defeat God of Brutals
Defeat God Brutal of Guard
Defeat the being in the Rat Tree
Defeat God Brutal of The Wild
Defeat Styx's Servant
Defeat Arvid Varanger
Defeat The Rat King
Defeat Lernaean
Defeat Enigma
Defeat The Tusk Trio
Defeat Aendisea's Bane
Defeat Shadow from The Abyss
Defeat Fulacks the Ugly
Defeat Death's Advocate
Defeat the Hunter Killer
Defeat the Koccuburry Cave Dweller
Find the world cornerstones
Defeat the Beast of the Valley
Find and defeat the three spirit brothers
Defeat Xaphxan The Invisble
Open the seals of Gont
Defeat the Mother of Wolves
Defeat Vaso
Refuse to bite Sava Savanovic
Survive the attack on Vamp'Ire