Starved For Shields
From Halopedia, the Halo wiki
Starved For Shields
Starved For Shields is an achievement in Halo: The Master Chief Collection. It is unlocked by completing any Halo 2: Anniversary level on Heroic or Legendary with only the Streaking skull active. The Streaking skull causes player shields to constantly decay at a slow rate, recharging only slightly with each enemy kill; the achievement's name is a reference to this fact. The achievement is worth 10 Gamerscore.