The party can choose to reason with Kaelen and end the boss fight without killing him. The presence check reduces in difficulty with each phase (DC 30, DC 18, DC 15, DC 6)
Items in the forge such as the furnace, bellows, workbench are encased in glass, that the player can strike to prevent Kaelen the Refracted from using his fractured reality ability.
Saving Kaelen will earn the party epic rewards
Killing Kaelen allows the party to loot the forge for standard rewards