Here is the full list of all 61 Two Worlds II HD - there are Call of the Tenebrae achievements.
Escape from Castle Vahkmaar
Complete Alsorna Introduction
Complete Chapter I in the Single Player Campaign
Complete Chapter II in the Single Player Campaign
Complete Chapter III in the Single Player Campaign
Completed the Single Player Campaign
Survive the Arena
Complete the Brotherhood Questline
Complete the Mage's Guild Questline
Complete The Thieve's Guild Questline
Complete the Merchant's Guild Questline
Collect all 4 Lost Runes: Human, Elven, Dwarven and Orcish (Single Player Campaign)
Complete Chapter I in the Multiplayer Campaign
Complete Chapter II in the Multiplayer Campaign
Complete Chapter III in the Multiplayer Campaign
Complete Chapter IV in the Multiplayer Campaign
Complete Chapter V in the Multiplayer Campaign
Complete Chapter VI in the Multiplayer Campaign
Complete Chapter VII in the Multiplayer Campaign
Win 5 Deathmatches
Win 5 Duels
Win 5 Crystal Capture matches
Build 5 buildings in Village Mode
Build 15 buildings in Village Mode
Confront Mirage
Wake the Army of Golems
Receive the gift of the Scavengers
Slay the Bailiff and his minions
Kill the Basilisk
Finish the Lovers' Conspiracy storyline
Defeat Corr Amarok
Annihilate the Phobias
Complete Pirates of the Flying Fortress
Find your Treasure
Reach 100 points of reputation amongst the pirates
Complete 4 new multiplayer adventure maps