The Descent into Avernus, Part 8 Title update for Idle Champions of the Forgotten Realms has 4 achievements.
Follow Bel's instructions and find the Sibriex before it's too late for Elturel.
Follow Bel's instructions while a cultist of Zariel preaches to your enemies.
Explore the flying fortress to find the adamantine rods for Bel.
Explore the flying fortress while ghouls from Elturel haunt your thoughts.