Final battle and epilogue BG: Siege of Dragonspear Guide
Last update: 01 July 2016
The final battle is quite challenging, especially since there are two enemies to defeat during it. Once you succeed, there is a long (and very linear) epilogue. All these events are described below.
Final battle
Once the large elevator reaches its destination, a cutscene will be shown in which Belhifet (final boss of the game), Caelar Argent and Hephernaan will participate. During the conversation you can make an important decision that will impact the shape of the battle. You can convince Caelar Argent to join your side by selecting the first dialogue option (above picture). In that case you will have to defeat Hephernaan and Belhifet in the final battle. If you don't convince Caelar to join you, then Hephernaan will be murdered and you will have to defeat Caelar Argent and Belhifet.
When the battle starts, focus on attacking Caelar Argent or Hephernaan. These two will be much easier to kill than Belhifet and their early death will make it impossible for them to cast too many spells which could weaken the team at the start of the fight. Focus on Belfihet once he is alone on the battlefield. The boss deals powerful (slashing) damage in melee combat, but you watch out even more for his other abilities. He can perform powerful fire attacks, so increase your party members' fire resistance to maximum. In addition to that, the boss is able to paralyze and slow down the party members in various ways. He can also become invisible. The latter is very dangerous since the boss can suddenly appear near weaker party members - you must react to it immediately.
Epilogue
After winning the battle a cutscene will start in which Caelar Argent and Aun Argent will participate (if Caelar allied with Belhifet, then she will be near dead). The portal will be closed and you will return to the castle. Use the key to leave the vault and speak with Torsin de Lancie and Bence Duncan. You can remain on this floor of the castle and participate in optional conversations with other people celebrating the victory or you can go immediately to the stairs and speak to sergeant Dizzo in order to leave the place.
After the main hero goes to rest, a cutscene with Hooded Man and Skie will start. During it the girl will transform into Unknowable Horror and you will have to defeat her. The vision will end and Bence Duncana will accuse the hero of brutally murdering Skie. Further cutscenes will show putting the hero in prison in Flaming Fist Quarter. Once in the prison, you will speak with Corwin whom you can convince that you're innocent. You will also speak to Hooded Man. Soon the cell will be opened by Thief who is friend with Imoen. You will be able to start escaping.
Walk to the main room. If you want, you can interact with the left table in order to reclaim all equipment parts. Use the open hatch to get to the basement and wait for the thief to unlock the secret passage. You will start walking through the sewers. During the journey you will have to deal with weak monsters. Once you reach a larger crossroad with a large hole in the center, select the tunnel leading southeast. After a while you will get close to a waterfall where Bence Duncan and captain Corwin will catch up on you. No matter how you behave you will be attacked. Don't try fighting, you can't win. Instead of that, go towards the waterfall and click it in order to jump.
After landing below you must reach the exit from the sewers. Outside you will meet with Imoen and a few other allies. The game will show you the ending movie - congratulations!