History of Zero Hour (Heroic)

Overview

The original 2019 Heroic variant of Zero Hour launched from The Farm after the original quest. It used the Shielded Foes modifier, which shielded Heavy Shanks and Servitors, and had a different maze route. Its first completion awarded the Outbreak Perfected catalyst; further completions earned SIVA Nanites toward catalyst progress. The separate Zero Hour (Expert) record covers the harder tier of the 2024 reprise, which Bungie called Legend at launch; it is distinct from this original Heroic activity. The game-data Power 750 value is historical.

Sources

• Zero Hour — Destinypedia distinguishes the original Heroic variant and documents its modifier, alternate maze, catalyst reward, and SIVA Nanite progress.
• Solo Heroic Zero Hour + Arc Configuration & Full Boss Clear — Esoterickk is a gameplay recording dated 15 May 2019, showing the original Heroic mission.
• This Week in Destiny — Bungie, 9 May 2024 separately describes the later reprise’s Legend mode and notes that original catalyst owners did not need to earn it again.