Like Hellhounds,Cave Krakens are also high-weight tasks that appear frequently,but they don't provide the best XP rates. These monsters are weak to magic,so you'll need to RuneScape gold use a Trident of the Swamp or similar single-target magic weapon to kill them. The process is slow,and their drop table is underwhelming,meaning you won't earn much GP while completing the task. Given their high Slayer task weight,Cave Krakens are perfect candidates for your block list if you're aiming for a more efficient Slayer grind.

3. Black Dragons

While Black Dragons can be profitable due to their dragon bones (good for Prayer XP),they are not ideal for efficient Slayer training. These creatures have high Hitpoints and require you to bring either an Anti-Dragonfire Shield or an Antifire Potion,adding extra prep time to each task. For maximum efficiency,you'll need to use a Dragon Hunter Lance,which is expensive and generally reserved just for Slayer tasks. Since Duradel assigns a relatively low number of Black Dragons to kill per task (around 10-20),it's better to block them and focus on monsters that can be killed in bulk for greater XP gains.

4. Greater Demons & Black Demons

Both Greater and Black Demons are high-weight tasks with disappointing loot tables. Duradel often assigns large quantities of these demons (up to 200),which means a lot of time spent fighting slow,single-target monsters with very little in return. On top of this,finding a world without competition can be a hassle,and the spawn rates aren't always ideal. Ironman players may consider keeping these tasks since they drop items needed for Slayer Helm upgrades or Emberlight,but for buy OSRS GP most players,these demons aren't worth the time and effort.