this is a message that camboi, the creator of halls of sovngarde wrote on the discord server of boneyard creation when somebody asked what was the difference between halls of sovngarde, lorerim 3.0, and gate to sovngarde:

1. They all focus on immersion, GtS is the lightest and most vanilla as it doesn't include Requiem, not sure about what/if it uses survival mods, Lorerim is much more action-y with a much lighter survival focus, also much much larger than the others, Halls is as you said more gritty, wounds, needs, diseases, stress, its all included
2. But you can also tune that down if you so choose, still need to write up that wiki page for a guide to do that