Want to know what this week’s Destiny 2 Timelost weapon is? Much like the Destiny 2 Nightfall weapons, every week a new Timelost weapon becomes available. They’re essentially better versions of the basic Vault of Glass weapons, with an extra third and fourth perk slot, as well as a slot for Adept weapon mods.
To get a Timelost weapon, you will need to complete its particular challenge in the Vault of Glass on Master difficulty. You can check out our Destiny 2 Vault of Glass walkthrough for tips on how to beat it. Five encounters in the raid have a challenge associated with them, which is basically an extra condition to meet when completing the fight (for example, the ‘Wait For It’ challenge on Confluxes requires you to wait until the Wyverns have started sacrificing themselves before you kill them).
On normal difficulty, completing a challenge grants bonus loot, but on Master, this is how you get your Timelost weapon. Only one challenge is ‘active’ per week, and they rotate with the weekly update every Tuesday at 5pm UTC.