Gets rid of the two-screen experience share range limit introduced in LoD patch 1.10.
Bare minimum you need a hexadecimal editor and need to know how to search for and how to modify hex values using this type of software.
Recommended hex editor : ImHex
The method used is changing the target address of a jump so that destination is the next instruction thus making exp share map-wide.
Devurandom / lolet / Fearedbliss
For their posts on the Phrozen Keep which helped me find the right offsets for several game versions