Pathfinder: Wrath of the Righteous

This boss can be found in the halls after the room where and his cultists turn some demons into mythic demons. And after the room that has a door to go outside. Go through the door into the hallways on the west side of the room.

Beware of traps in the upcoming hallways. The hallways lead to some dead ends with altars and loot, and a room with a puzzle. You will need to activate all three altars and then solve the puzzle. BEWARE, using the altars summons the boss but you can sneak/run away and he will disappear, meaning you only need to fight him in the puzzle room. He cannot be killed permanently at the altars.(As far as I know)

To get to the altars, deviate from the hallway. The hallways always want to go straight until they end so once you reach a turn, that's where the altars are.

Once you clear the from the room at the end, you need to have two characters stand on the pressure plates and then type in the password on the wall. The password can be found from the "Cryptic Note".

If you don't have or don't want to find it, the password is

BEWARE Don't rush right in, there is a trap that heals him over 80hp per turn. Easiest option is to lure him out into the hallway and kill him there. He is beefy and tough so be sure to buff and position well.