Back to Halo: The Master Chief Collection

Steam

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.

641

The Maw

Halo CE: Complete The Maw.

Uncommon

25.4%last reported global rate

642

The Soldier We Need You To Be

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

Uncommon

25.5%last reported global rate

643

Assault

Halo 3: Complete The Storm.

Uncommon

25.6%last reported global rate

644

Keyes

Halo CE: Complete Keyes.

Uncommon

25.7%last reported global rate

645

Two Betrayals

Halo CE: Complete Two Betrayals.

Uncommon

26.3%last reported global rate

646

The Road

Halo 3: Complete Tsavo Highway.

Uncommon

26.6%last reported global rate

647

Foe Hammer

Kill 5,000 enemies or players.

Uncommon

27.3%last reported global rate

648

Sacrifice

Halo CE: Activate Terminal 2 on Halo.

Uncommon

27.3%last reported global rate

649

The Arbiter

Halo 2: Complete The Arbiter.

Uncommon

27.4%last reported global rate

650

Holdout

Halo 3: Complete Crow's Nest.

Uncommon

28.1%last reported global rate

651

The Library

Halo CE: Complete The Library.

Uncommon

28.2%last reported global rate

652

I Didn't Train To Be A Pilot

Halo: Reach: Kill 3 of the anti-aircraft batteries during New Alexandria.

Uncommon

28.7%last reported global rate

653

Welcome to Reach

Halo: Reach: Complete every level of the game on Easy difficulty.

Uncommon

28.7%last reported global rate

654

Metropolis

Halo 2: Complete Metropolis.

Uncommon

29.1%last reported global rate

655

343 Guilty Spark

Halo CE: Complete 343 Guilty Spark.

Uncommon

29.8%last reported global rate

656

Outskirts

Halo 2: Complete Outskirts.

Uncommon

30.1%last reported global rate

657

Dirty Bird

Halo 2: Fly the Heretic Banshee.

Uncommon

30.2%last reported global rate

658

Landfall

Halo 3: Complete Sierra 117.

Uncommon

30.5%last reported global rate

659

Easy to Overlook

Halo: Reach: Access hidden UNSC radio chatter.

Uncommon

30.7%last reported global rate

660

A Pile of Medals

Collect 2,000 campaign or playlist medals.

Uncommon

31.3%last reported global rate