Official notes
Official wiki for this creature. Official news wins.
You already know the room. The creature is the constant. You are the variable.
Deep under the guild. Left half is the old story.
Slayer · Old School RuneScape
Where
Legends' Guild dungeon
Assigned by Old School slayer masters (Chaeldar through Duradel, and Konar). The live page lists who.
Hunt
The deep room under the guild. Left half of the shield is the old story. Confirm the live drop. Melee. Protect as the page says.
Watch
Task-only doors, face covers, and cannon-blocks are on the live page. Confirm on the wiki.
Kill
A kill ends when shadow warrior drops. Walk the room if you pulled extras. Reset at the door when the task is done. Wrong prayer or the wrong tile is the wipe. That is the whole file. Do not treat a slayer floor as a raid invocation. Counts, drops, and the living method: the Old School wiki for this hour.