Infernal Brawl
Hey there guys! I'm Dming DiA for a while now... the party has reached the endgame by retrieving the sword of Zariel.
Context: They have made contact and an infernal contract with BEL, they released the *Solar* imprisoned in the companion. Before that, they also made contact with Arkhan the cruel (They have history with the cult of the dragon) so Tiamat is also a player here. The Paladin has the shield of the hidden lord with Gargauth (made a deal with him to release it whenever he has the chance in exchange to not attack Zariel right away), and of course ZARIEL.
The party: Paladin, Fighter/Barb, Druid (with companion) and a Forge master dwarf(kinda psionic monk).
Im still Debating where to take place the final encounter and who should result to be the future ruler of the avernus. I accept any advise, premises or ideas to end this. (The aftermath of this campaing will lead to VECNA eve of ruin, so i have some hidden NPCS and Bad guys that can appear to foreshadow this (more).