The Icewind Dale, Rime of the Frostmaiden, Part 5 Title update for Idle Champions of the Forgotten Realms has 4 achievements.
Escort the survivors to Bryn Shander, as you debate how best to move forward.
Escort the survivors to Bryn Shander, while being harassed by a Peryton.
Return to Sunblight fortress, to make sure Xardorok pays for his crimes.
Return to Sunblight fortress, with some mimics looking for revenge.