The new Hard Mode for Destiny‘s latest raid, King’s Fall, opens today. Players will be able to try their hand at the uber-difficult challenge today, October 23, starting at 10 AM PDT / 1 PM EDT / 6 PM UK.

As previously stated, Bungie recommends that the raid be tackled by players with 300-320 Light, and the loot rewards in it will be between 310-320. Watch the video above to learn more about King’s Fall.

Destiny lead raid designer Gavin Irby was part of the team that crafted the Hard Mode for King’s Fall. Here’s what he had to say about what kind of challenge players can expect.

“This time, we followed a subtractive approach by building the mechanics early on. For a long time, we play-tested internally in Hard Mode, treating it as the default experience. Once we were satisfied, we removed them to arrive at the Raid you have already played,” he said.

“For the mechanics themselves, we shied away from simply increasing sandbox difficulty (not that it won’t be harder). You’ve had time to hone your strategies and develop a rhythm,” Irby added. “Some of you might even be able to do it backwards, blindfolded, or upside-down. Hard Mode is going to upset that rhythm. We’re going to give you one more plate to spin, and make you think on your feet.”

It certainly sounds like a challenge, but we’ll be surprised if Destiny players don’t beat it in a matter of hours. After all, the regular King’s Fall raid was toppled not long at all after it went live in September.

We’ll update this post to let you know which team was able to beat King’s Fall on Hard Mode and claim the title of world’s first.

Bungie has also stressed that players’ raid activity is only considered officially complete once they leave the area. If you want the “world’s first” title, maybe don’t celebrate until after you’ve returned to orbit. “Kill Oryx and get out of there,” Bungie said. “Celebratory dancing could rob you of your glory.”