In RuneScape, one must complete the "Dragon Slayer" quest before equipping Rune Platelegs.
Explanation
The answer is false because completing the Dragon Slayer quest is not a requirement for equipping Rune Platelegs in RuneScape. While the quest does reward players with the ability to wear the Rune Platebody, it does not dictate the use or wearing of Rune Platelegs. Players can equip and wear Rune Platelegs regardless of whether or not they have completed the Dragon Slayer quest.