Swarm

Swarm is a gold skull in Halo 2: Anniversary, part of Halo: The Master Chief Collection. It is unlocked by watching Halo: Nightfall in the Halo Channel.

Effect
The skull, when activated, increases the health of Hunter units, as well as their combat prowess. This makes them more formidable as enemies than they already were. It also rewards players with more points for killing them.

Trivia

 * It is named after the main threat in Halo: Nightfall, which are swarms of Thanolekgolo that inhabit a derelict shard of Installation 04.