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