Here lies a giant demon, capable of wrecking havoc to your party even with its basic attacks. This happens to be the last boss of this dungeon and his name is Daimon.
Daimon has a variety of physical and magical attacks. His charging punch can send you flying, dealing massive damage. He can also fly up and deal a crushing punch from above. The only way to avoid this is by anticipating the attacks. You’ll know when he’s up for a physical attack when he’s not casting his spells and if he quickly moves towards you. If you’re a ranger, strider, magick archer or a bow-equipped assassin, you can interrupt his charge by a perfectly timed headshot. This will stagger him a bit and allow you to deal extra damage for a few seconds.
His basic elemental attacks can be easily avoided by running. If you get hit, the damage will be manageable; however you may get frozen or stunned helplessly sometimes. Fortunately, he doesn’t have that much debilitation skills like the annoying necromancer and his cursed dragon in The Forgotten Hall. In the last two or three health bars, Daimon will be able to cast spells WHILE attacking physically, and even cast powerful spells in a split second such as Meteor Storm and Seism. It’s a relief that he doesn’t seem to be able to cast the overpowered High Maelstrom spell.
His special attacks include a homing rain of blue projectiles that can cause great damage. You can take cover behind some rubble or just run around as the projectiles rain around you. He can also grab your character and deal continuous damage. You also need to watch out for his vortex attack. Getting caught by it means certain death or banishment of your pawns. It is also a brief window of opportunity to damage and stagger him.
After interrupting this attack, Daimon will curl up and hover near the ground. Focus your attacks and if you’re able to stagger him while in this state, he’ll become briefly vulnerable and take extra damage. It will be a good idea to use conqueror periapts (for physical attacks) or Demon Periapts (for magic users) to deal massive damage. As long as you evade most of his attacks and as long as you have a good supply of party and self curatives, you should be able to last long enough to defeat the demon.
After defeating the demon, exit through the opened gate and open the chests to get various bitterblack equipment, including a moonbeam gem. Follow the stairwell to reach the exit. Pull the lever in the exit and and head for a scene.
You can enter the dungeon again but expect a major change in the enemy composition. You have to get your best party and best gears up since the enemies will be much harder from hereon. Take note that the shortcuts you opened before will be closed again so in order to use them, you have to explore the dungeon again from the start. Also, you have to face the stronger version of the bosses you fought before.
For Mystic Knights, I generally take about 24 Demon Periapts using them 4 at a time for the 2nd form of Daimon. I cast Holy Enchantment for my weapon and then Grand Cannon X2 or X3 if I have time to make it. Use Full Moon Slash to hit the cannon triggers from your cast to maximize projectiles and Daimon's health will drop dramatically.
In regards to the vortex, the emergency escape when you are getting sucked in, cast Ruinous Sigil while it pulls you in and hold it until when you are almost in the vortex center and then cast the spell which will hurt him and end the vortex. You could also grand cannon to Daimon if you are far enough away to get a few shots in as I shot usually doesn't stop the vortex.
-Penguin72
Daimon can be easily beat by using conquer periapt and blast arrows. You can kill him in under 2 minutes.
Just take a good supply of arrows!