Destiny‘s Vault of Glass Raid on hard mode and its final boss, Atheon, are probably the most challenging things you can do in the game right now, but you wouldn’t know it just by watching the video above.

YouTube user Bludrunk uploaded the video, which shows a team of Guardians taking Atheon down in just 17 seconds, though this ignores the time it takes to reach the boss and the phase in which he’s vulnerable. The video description attributes the feat to a clan called Legendary Crew. Their group was made up of three Sunsinger Warlocks and three Gunslinger Hunters. Five were level 30, one was 29. Four out of six used the Gjallarhorn exotic rocket launcher, which, as you can clearly see, adds up to an insane amount of damage.

To get an idea of just how hard Atheon is, watch part four of GameSpot’s Vault of Glass Raid guide below, or check out an unedited video of our friends over at Giant Bomb taking Atheon on for the first time. It only took them a couple of hours.

Yesterday, Bungie announced it will introduce some bug fixes for this encounter. Knocking any boss off of a ledge in their arena is considered a bug, and for the Atheon encounter, it’s adding “baby bumpers to areas where players could knock Atheon out of the environment.” It also said that a “change will take effect next week which fixes a bug with Atheon’s target selection. When using its Timestream ability, Atheon will select 3 players at random, instead of choosing the three players furthest from it.”