Full list of all 43 Death's Gambit achievements.
The base game contains 34 achievements, and there is 1 DLC pack containing 9 achievements.
Slay the Eldritch Council in heroic
Slay the Dark Knight in heroic
Slay Endless in heroic
Slay Amulvaro in heroic
Slay Cusith in heroic
Enchant a weapon or equipment to +10
Slay Bysurge in heroic
Die 50 times
Slay the Tundra Lord in heroic
Escape Thalamus
Slay the Soul of the Phoenix in heroic
Slay Origa in heroic
Slay Endless
Slay the Forgotten Gaian in heroic
Slay the Bulwark in heroic
Slay Amulvaro
Slay the Eldritch Council
Slay Cusith
Obtain all 7 feather upgrades
Slay the Tundra Lord
Unlock 14 talent points
Slay Bysurge
Slay Origa
Slay the Dark Knight
Slay the Forgotten Gaian
Slay the Bulwark
Slay the Soul of the Phoenix
Slay the Owlking in heroic
Execute a parry
Slay the Owlking
Defeat 12 bosses in Heroic
Recover all boss journals
Slay the Owlking boss using only kicks
Kill the final boss without quitting the game and in under 4 hours from starting the game and without leveling up.
Slay Heroic Wrath King Sirad
Slay the Aberrant AI
???
Slay the Grey Mage
Slay Wrath King Sirad
Slay Heroic Grey Mage