Official notes
Official wiki for this creature. Official news wins.
You already know the room. The creature is the constant. You are the variable.
Elemental or mind shield. Breath is the wipe.
Slayer · Old School RuneScape
Where
Asgarnian Ice Dungeon
Slayer — elemental or mind shield
Chaeldar, Konar, Nieve/Steve, Duradel.
Hunt
Elemental or mind shield. Protect Missiles. Icy breath is the wipe. Icy breath. Elemental or mind shield. Protect Missiles. Ancient wyverns are a separate file on the wiki if the task names them.
Watch
Icy breath without a shield.
Kill
A kill ends when skeletal wyvern 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.