Here is the full list of all 36 Atonement: Scourge of Time achievements.
In the final battle as Elleria, vanquish all avatars one by one.
Complete the game with Elleria’s team.
Complete the game with Elleria’s team on Challenging difficulty.
In the final battle as Elleria, ignore the other avatars and vanquish the source of the problem.
Send Lomgorth’s spirit into the afterlife.
Defeat Lomgorth’s golems on Challenging mode.
Gain access into the locked room in Lomgorth’s Tower.
Let Gashrun confront the challenges of the Shrine of Phantoms.
Acquire the rare Nihil Blade.
Convince Ignis to stop killing people.
Teach Sugel a lesson.
Complete Act 3 with Elleria’s team.
Complete Act 2 with Elleria’s team.
Find the missing man in the Medias tunnels.
Bring Lasarg his lost bow.
Complete Act 1 with Elleria’s team.
Locate the Man-Eater plant and destroy it.
Defeat Ronard and his assistants without Elleria or Gashrun getting K.Oed.
Complete the game with Nail’s team.
Complete the game with Nail’s team on Challenging difficulty.
In the final battle as Nail, vanquish the Future avatar first.
In the final battle as Nail, vanquish the Past avatar first.
Defeat Rick the Despot on Challenging mode.
Liberate town of Vesar from a powerful despot.
Find and defeat the giant on Mt Cereus (as Nail’s team).
Find and lay to rest all the tormented souls in the Capital.
Have Kanden reunite with his girlfriend.
Help Denshor village with the bandit problem.
Complete Act 3 with Nail’s team.
Complete Act 2 with Nail’s team.
Sort out the plagued rat problem in the Capital.
Infiltrate the Promgan slave camp and defeat its leaders.
Find and read all the journals in Fort Caskell.
Complete Act 1 with Nail’s team.
Hunt down the Chimera in the woods.
Defeat the (first fight with) Chimera within 6 turns.