I can only comment as far as my testing went when I was part of the QC team ~1 year ago.
MotLD is a 25 level kit because you cannot qualify for it until Monk level 5 ~ Lore (Arcana?) 8. The requisite lore skill probably needs updating because monks do not get Arcana (base NWN2 lore skill) as a class skill any more.
You progress as a pure level monk alongside MotLD abilities, meaning +1 monk AC every 5 levels, Wisdom mod to AC, IKD, Greater Flurry, Diamond Soul, Empty Body, Perfect Self, etc. MotLD does not progress in Fist Enhancement feats, meaning you will only have Ki Strike (Magic) and not Lawful or Adamantine strike. I believe they also lose access to Stunning Fist & Quivering Palm in exchange for Death Attack & Death Touch (which are both worse than Stunning Fist & Quivering Palm). Death Knell as a SLA was not working when I last tested it, neither was Death Guard granting any bonuses to Save vs Death effects.
You gain the abilities as listed on the wiki although the last time I tested, only Death Attack scaled past level 10 MotLD. Death Guard & Macabre Experiments did not progress beyond level 10 MotLD unless these were changed since I last tested.
I had serious concerns about the triple-stacking AC this class had access to (Macabre Experiments + Monk Wis AC Bonus + Monk AC Bonus) and I don't know if these were ever resolved.
As far as I am aware, the kit has not been released for public use yet.