Kurask

About
You can get to Kurask's by clicking the Monster Teleport (Varrock Teleport) then clicking on "More Monsters", then click on "Slayer Dungeons", and then finally clicking "Relekka Slayer Dungeon". After you teleport to the Relekka Slayer Dungeon follow it down and Kurask's are the 8th monster to show up.

Kurask's are for advanced players and are pretty hard. They hit high and really often. I suggest bringing prayer potions and using melee protect.