It took the player less than 4 days to achieve the feat, after grinding virtually non-stop since its release on August 26.
You can watch a video of the moment JokerdTV reached level 60 here (warning: bad language).
Many World of Warcraft Classic players have faced hours-long queues to access the game since its release, followed by in-game congestion and further queues to complete quests.
Released to coincide with the franchise’s 15th anniversary this year, Classic lets World of Warcraft subscribers experience the early days of Blizzard’s MMO with an authentic recreation of the pre-expansion game.
Shares of Activision Blizzard hit a nine-month high on Tuesday following World of Warcraft Classic’s release.
Blizzard will launch a World of Warcraft 15th Anniversary Collector’s Edition on October 8. Priced at $100 (£89.99), it will include 30 days of game time, a ten-inch Ragnaros the Firelord statue, a pin, mousepad, set of art prints and a pair of in-game mounts.