Here is the full list of all 41 Bound By Flame achievements.
Use the energy of the Worldheart to annihilate the Ice lords and save Vertiel
Complete Bound by Flame in the Hawk difficulty mode
Vanquish Lord Blackfrost
Set your enemies aflame 50 times
Preserve your humanity
Unlock all the Pyromancer specialization skills and their upgrades
Unlock all of the skills of a Ranger and their upgrades
Unlock all the the Warrior skills and their upgrades
Seduce Sybil
Accomplish all of Randval's personal quests
Accomplish all of Sybil's personal quests
Vanquish a Concubine
Kill 50 enemies with daggers
Recycle 30 objects
Kill 50 enemies with an axe
Accomplish 20 side quests
Make 100 objects (potions, booby-traps and munitions)
Kill 50 enemies with a warhammer
Vanquish a Deadwalker General.
Fire 50 crossbow bolts
Make 5 improvements to your weapons and armour
Vanquish 150 enemies
Search 50 fallen enemies
Set 20 traps and have them sprung
Vanquish 75 enemies
Loot 20 chests
Kill 50 enemies with a sword
Vanquish a Juggernaut
Vanquish 25 enemies
Upgrade a skill
Become the most powerful being on Vertiel
Purify Vertiel by bathing it in flame
Accomplish your transformation by following the demon's way
Seduce Edwen
Seduce Rhelmar
Seduce Randval
Accomplish all of Rhelmar's personal quests
Accomplish all of Edwen's personal quests
Complete Bound by Flame in the Buffalo difficulty mode
Complete Bound by Flame in the Captain difficulty mode
Poison your enemies 50 times