Leaders of Scholomance

just for people who struggled like me, for the kills needed you need to be in OLD SCHOLOMANCE , to get there you need to complete the achievement 'Memory of Scholomance'. Once you have done that instead of turning left into the dungeon you turn right, click the journal and your in the og version

I received this today, 7/11/2023, at the launch of 10.1.5. After you have unlocked Old Scholomance, this achievement becomes possible. I received the item [item=206370] at the end of the Old Scholomance run, and then ran back to the Chamber of Summoning (green room with a skull, at the top center of the map) and down the small corridor that leads to an overlook of the outside of Scholomance (down the north stairs if looking at the map). Here, I clicked the brazier and it summoned [npc=10506]. After defeating him, I received Leaders of Scholomance as I had already defeated [npc=1853] at the end of the dungeon. Hope this is helpful to someone!

After you kill [npc=10506] you can jump off the balcony to quickly exit the instance.