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