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Halo: The Master Chief Collection Achievements

Official Steam achievement definitions and latest reported global unlock rates, ordered from rarest to most common.

Total achievements700

Rarest rate0.500%

Ultra rare56

Last checkedSep 28, 2026

Delayed official data

Rates and award counts were last observed on Sep 28, 2026.

521

Precious Cargo

Halo: Reach: Beat the par score on The Pillar of Autumn.

Rare

10.4%last reported global rate

522

Swift and Shallow

Halo: Reach: Hijack a Banshee during the Reach Campaign.

Rare

10.5%last reported global rate

523

Inspector

Halo 2: Activate Terminal 4 on The Arbiter.

Rare

10.6%last reported global rate

524

Before and After

Halo CE: Complete every level of the game having seen it in both classic and remastered mode.

Rare

10.7%last reported global rate

525

Nine Lives Are a Myth

Halo: Reach: Beat the par score on New Alexandria.

Rare

10.8%last reported global rate

526

Back At It

Halo 2: Play a game of Halo 2 Anniversary on the 9th of any month.

Rare

11.1%last reported global rate

527

Scholar

Halo 2: Activate Terminal 11 on Uprising.

Rare

11.1%last reported global rate

528

Bonus Level

Complete 200 missions or multiplayer games.

Rare

11.4%last reported global rate

529

Decorated Warrior

Halo 2A MP: Get awarded at least 10 different medals in one multiplayer game.

Rare

11.6%last reported global rate

530

Highway Robbery

Halo 3: Beat the par time on Tsavo Highway.

Rare

11.6%last reported global rate

531

Kilotons of Fun

Halo CE: Activate Terminal 10 on The Maw.

Rare

11.7%last reported global rate

532

Still Sharp

Halo: Reach: Beat the par score on ONI: Sword Base.

Rare

11.7%last reported global rate

533

Wake Up, John

Halo 4: Complete every level of the game on Normal difficulty.

Rare

11.7%last reported global rate

534

Eavesdropping

H3: ODST: Find the 6th Audio Log.

Rare

11.8%last reported global rate

535

Two Corpses In One Grave

Halo: Reach: Kill 2 vehicles at once with the Target Locator during ONI: Sword Base.

Rare

11.9%last reported global rate

536

Warden

Halo 2 MP: In Classic or Anniversary matchmaking, stop the killing spree of another player.

Rare

11.9%last reported global rate

537

Chesty Puller Starter Kit

Collect 7,000 campaign or playlist medals.

Rare

12.1%last reported global rate

538

Third Time's A Charm

Halo 3: Play a game of Halo 3 on the 25th of any month.

Rare

12.1%last reported global rate

539

Legend Slayer

Halo 2A MP: Kill an opponent that has the Legendary Anniversary achievement.

Rare

12.2%last reported global rate

540

I Was Wondering What Would Break First

Kill 100 Knights.

Rare

12.4%last reported global rate