TzHaar-Ket have a max hit of 300 life points, which could cause problems for players with low Defence, although it is rare to see them hit over 200. Protect from Melee is recommended for lower level players. Despite being the same level, they tend to miss a lot more than the weaker TzHaar-Xil. Prior to the successful deployment of ClusterFlutterer, these creatures were killed often, primarily by bots, and so it was very hard to find a world without competition. In addition, players can go into the Fight Cave and die to fully heal themselves and recharge Prayer and Summoning points. They are more popular to kill than TzHaar-Xil despite their higher defence, due to having both more life points and more valuable Obsidian item drops.
TzHaar-Ket can be killed as part of the Slayer task set by Kuradal or Morvan. The player has a choice whether to do the task as normal or to change it to Volcanic Creatures, which are the creatures in the Fight Cave. Changing the task requires the player to kill TzTok-Jad. As a reward there is a bonus amount of Slayer experience.
Warning: Note that if you are a low levelled player coming to fight Tzhaar-Hurs, make sure that no Tzhaar-Kets or Tzhaar-Xils are near, as they will try to protect the Tzhaar-Hurs by trying to kill you. If you are level 95+, you should be able to fight these monsters with little or no food.