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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.

561

Xenophobia

H3: ODST: Complete any level without using Covenant weapons.

Rare

14.2%last reported global rate

562

Rookie

H3: ODST: Complete every level of the game on Easy difficulty.

Rare

14.3%last reported global rate

563

Enchanted

Halo 2: Activate Terminal 6 on Delta Halo.

Rare

14.4%last reported global rate

564

Can't Put It Down

Complete 150 missions or multiplayer games.

Rare

14.5%last reported global rate

565

Oh, These Baubles?

Collect 6,000 campaign or playlist medals.

Rare

14.5%last reported global rate

566

Do Tell

H3: ODST: Find the 4th Audio Log.

Rare

14.8%last reported global rate

567

You Are The Weapon

Halo CE: Kill a Hunter with one pistol round.

Rare

14.9%last reported global rate

568

Midnight

Halo 4: Complete Midnight.

Rare

15.3%last reported global rate

569

Coastal Highway

H3: ODST: Complete Coastal Highway.

Rare

15.4%last reported global rate

570

Warrior

Halo 2: Complete every level of the game on Normal difficulty.

Rare

15.4%last reported global rate

571

Demon

Halo 2: Complete any campaign level without dying on Normal or harder.

Rare

15.5%last reported global rate

572

Data Hive

H3: ODST: Complete Data Hive.

Rare

15.6%last reported global rate

573

Composer

Halo 4: Complete Composer.

Rare

15.8%last reported global rate

574

Kikowani Station

H3: ODST: Complete Kikowani Station.

Rare

15.9%last reported global rate

575

Secret Agent

H3: ODST: Find the 6th clue unraveling the mystery.

Rare

15.9%last reported global rate

576

Shutdown

Halo 4: Complete Shutdown.

Rare

16.0%last reported global rate

577

Private Eye

H3: ODST: Find the 5th clue unraveling the mystery.

Rare

16.2%last reported global rate

578

Close Quarters Combat

Halo CE: Complete The Truth and Reconciliation with at least four rounds left in your Sniper Rifle.

Rare

16.4%last reported global rate

579

Tuned In

H3: ODST: Find the 3rd Audio Log.

Rare

16.4%last reported global rate

580

Moon's Out, Goons Out

Halo: Reach: Beat the par score on Nightfall.

Rare

16.5%last reported global rate