Anyone have any idea on how to get the "Emek's Rest" / Outlander ending? I have no idea how it nor the Mayla ending get triggered.
I couldn't trigger Emek's Rest Ending even with help from this forum, but I did Mayla's.
For Mayla Ending you must agree to help Mayla in Act III (when she appears before you in the right wing), then inside Murkhal's realm knock her out, then progress through her dialogues in the dungeon until at some point she will promise to share a secret with you in return for release.
Important! You must do it before you kill the first big bad in Act III (the one who messes with Cinkhan).
You go talk to Succubus, return to Mayla, agree to release her. Now each time big bads of Act III die, you will have an option to consume their shard of Murkhal's soul. You must consume all four pieces if you want to get this ending.
After releasing Mayla you go to your Castle's Inn (will grant you a scene), then go west of Slinks (will grant you a scene, but interaction it is bugged, looping for 10-20 times if you trigger it from Slinsk's side and infinite time when you trigger it from Oaskhire), then go to Slinsk Inn (will grant you a scene).
Afterwards, she will be waiting for you in Yakotin Inn. You must collect three pieces of Murkhal's soul (meaning doing all big bads except the last one) and she will grant you another scene.
Then, in the final fight, you must consume the final shard of Death God's soul and Mayla will be waiting for you in the final scene. There, upon choosing the right options, you pushes Hero to apotheosis.
And this is how you get Mayla ending. Pretty easy one.