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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.

681

Going Bananas

Kill 100 Brutes.

Uncommon

41.0%last reported global rate

682

Standard Operating Brocedure

Complete any co-op level on Normal difficulty.

Uncommon

41.4%last reported global rate

683

All Out of Bubblegum

Collect 1,000 campaign or playlist medals.

Uncommon

41.9%last reported global rate

684

Mind the Skill Gap

Halo: Reach: Observe the logo of a buttoned-up mining company.

Uncommon

42.3%last reported global rate

685

Halo

Halo CE: Complete Halo.

Uncommon

42.5%last reported global rate

686

I Need A Weapon

Halo: Reach: Complete Nightfall.

Uncommon

44.5%last reported global rate

687

Stick With It...A Little Longer

Play a multiplayer or co-op game at least 3 months after your first game.

Uncommon

46.7%last reported global rate

688

My Buddy Chips

Halo CE: Fight alongside Chips Dubbo and listen to his words of wisdom.

Uncommon

48.2%last reported global rate

689

The Guardians Are Coming

Get killed by the Guardians.

Uncommon

49.3%last reported global rate

690

Protocol Dictates Action

Halo: Reach: Complete ONI: Sword Base.

Uncommon

49.5%last reported global rate

691

Pillar of Autumn

Halo CE: Complete The Pillar of Autumn.

Common

50.1%last reported global rate

692

Just A Taste

Collect 500 campaign or playlist medals.

Common

51.6%last reported global rate

693

Spoilsport

Kill 100 Jackals.

Common

55.8%last reported global rate

694

We're Just Getting Started

Halo: Reach: Complete Winter Contingency.

Common

56.0%last reported global rate

695

The One Percent

Kill 100 Elites.

Common

56.9%last reported global rate

696

Where Am I?

Complete 10 missions or multiplayer games.

Common

61.6%last reported global rate

697

Balaho's Most Wanted

Kill 100 Grunts.

Common

71.8%last reported global rate

698

I'm Sorry, Dave

Halo: Reach: Find the hidden binary signature.

Common

74.2%last reported global rate

699

Just Getting Started

Kill 100 enemies or players.

Common

79.8%last reported global rate

700

Your Journey Begins

Complete a campaign mission or a match of multiplayer.

Common

89.7%last reported global rate