Here's the first, which will help you beat Kalli, the Corrupted. For those that don't know, Raid encounters are much more complicated than your normal strike boss in Destiny 2. The first encounter of the Raid is Kalli, the Corrupted, and it takes place in a sort of Gladiator arena not entirely unlike the Blind Well. At a certain point, Kalli will raise her hand and you'll get a message that says "Kalli prepares to wield her weapon." Kalli will prepare to wield her weapon, players will head to safe rooms again, Kalli's weapon will fail to eliminate her opponents.

Source: Forbes September 16, 2018 14:48 UTC