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