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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.

481

Charum Hakkor

Halo 4: Activate Terminal 3 on Infinity.

Rare

8.00%last reported global rate

482

Silent but Deadly

Halo 2: Kill 7 opponents from behind in a row without being spotted.

Rare

8.00%last reported global rate

483

Skulltaker Halo 3: Blind

Halo 3: Find and claim the Blind Skull on Normal or harder.

Rare

8.00%last reported global rate

484

Can't Get Enough

Complete 300 missions or multiplayer games.

Rare

8.10%last reported global rate

485

Herald of the Reclamation

Complete all campaigns on Easy difficulty.

Rare

8.10%last reported global rate

486

Cavalier

Halo 3: Beat the par score on Tsavo Highway.

Rare

8.20%last reported global rate

487

Tighten Up The Graphics

Halo 2: Complete every level of Halo 2 having seen it in both classic and remastered mode.

Rare

8.20%last reported global rate

488

A Long Time Ago

Halo 4: Play a game of Halo 4 on the 6th of any month.

Rare

8.30%last reported global rate

489

Beachhead

Halo CE: Storm The Silent Cartographer beach with no Marine casualties on Heroic or Legendary.

Rare

8.30%last reported global rate

490

Operation Completion

Halo 4: Complete a Spartan Ops mission.

Rare

8.30%last reported global rate

491

Overtaken By Events

H3: ODST: Beat the par time on Data Hive.

Rare

8.40%last reported global rate

492

Flood

Halo 4: Activate Terminal 4 on Reclaimer.

Rare

8.70%last reported global rate

493

Inquisitive

Halo 2: Activate Terminal 2 on Outskirts.

Rare

8.70%last reported global rate

494

Obsessed

Halo 2: Activate Terminal 13 on The Great Journey.

Rare

8.70%last reported global rate

495

Just Browsing

Halo 3: Complete a match on at least 4 different game types in multiplayer.

Rare

8.90%last reported global rate

496

The Good, The Bad, and The Dead

Collect 9,000 campaign or playlist medals.

Rare

9.00%last reported global rate

497

Guerilla

Halo 3: Beat the par score on Sierra 117.

Rare

9.10%last reported global rate

498

Head Banging

Halo 4: Beat the par score on Composer.

Rare

9.10%last reported global rate

499

Overheard

H3: ODST: Find the 8th Audio Log.

Rare

9.10%last reported global rate

500

No Picnic

Halo: Reach: Observe a grizzly scene on New Alexandria.

Rare

9.20%last reported global rate