Since the launch of Shadowkeep, Destiny 2 fans have been stuck on an previously-obscure lore entry in a quest to unlock a massive secret supposedly waiting within the game. The idea? Reach level 999 and beat boss Dul Incaru solo to unlock “the true ending of the Dreaming City.” Players have finally managed to meet the criteria, and while nothing’s happened yet, Bungie is working to keep hope alive.
The lore entry ‘act|choose|react’ was added in Forsaken and it mentions a challenge to “achieve Light Level 999 and defeat Dul Incaru in a one-person fireteam to unlock the true ending of the Dreaming City.” Based on lore connections that are too deep to get into here, there’s a strong possibility this was always meant to be a red herring, and at the time it was impossible to reach 999 Light anyway.
While there’s still a lower hard cap for Light level in Shadowkeep – or rather, Power, as it’s now known – the addition of the seasonal Artifact means that it’s possible to exceed that cap. Players did the math earlier this month and realised that it was theoretically possible to hit 999, and since then, there’s been a race to get there and solo Dul Incaru first.
Original source: https://www.pcgamesn.com/destiny-2/999-power