The patch takes its name from the return of the Siege of Orison. The datacore shows the Nine Tails arriving with a full elite tier — new CQC, juggernaut, sniper, soldier and techie archetypes replacing the single generic ground-combat NPC — plus a set of named bosses that use a stun-immune health template. Separately, a new story arc runs out of Levski for the People’s Alliance against the Moraine.

Hedeby Gunworks debuts with the lever-action Arlington rifle in three finishes and a matching Myers telescopic optic. Three new sniper-glint underbarrel attachments also appear — the tell that scope glint is becoming a real counter-sniping mechanic.

Fuel nozzles are a brand-new item category — they did not exist in 4.9. Each has its own flow rate, so refuelling gear becomes a real fitting choice rather than a fixed capability.

Items whose in-game name changed. Several were placeholders that finally got real names — useful if you have been searching for gear that appeared unnamed in 4.9.