Complete the following missions with a score that is more than the indicated values. Activate as many scoring sculls as possible, and play under the Heroic or Legendary difficulty setting. You can also increase your score through melee attacks, headshots, killing sprees, and scoring multiple kills.

Halo 2
Cairo Station: 25,000
Delta Halo: 25,000
Gravemind: 25,000
High Charity: 25,000
Metropolis: 25,000
Outskirts: 25,000
Quarantine Zone: 25,000
Regret: 25,000
Sacred Icon: 25,000
The Arbiter: 25,000
The Great Journey: 25,000
The Oracle: 25,000
Uprising: 25,000

Halo 3
Cortana: 25,000
Crow's Nest: 25,000
Floodgate: 25,000
Halo: 25,000
Sierra 117: 25,000
The Ark: 25,000
The Covenant: 25,000
The Storm: 25,000
Tvaso Highway: 25,000

Halo 4
Composer: 25,000
Dawn: 25,000
Forerunner: 25,000
Infinity: 25,000
Midnight: 25,000
Reclaimer: 25,000
Requiem: 25,000
Shutdown: 25,000