common.emevd.dcx - removes the lordvessel requirement for warping.
m12_00_00_00.emevd.dcx - makes all of the changes to streamline the DLC access.
m17_00_00_00.emevd.dcx - removes the unique crystal golem in Duke's Archives.

This optional file removes the requirement for the antiquated set and crown of Dusk corpse to spawn, so players can once again acquire those items before defeating Manus.

See mod's full description for more details.