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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.

381
Skulltaker Halo 3: Fog

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

Very rare
4.10%last reported global rate
382
Speedy Delivery

Halo: Reach: Beat the par time on The Package.

Very rare
4.10%last reported global rate
383
Go, Chief! Gun It!

Halo 3: Beat the par time on Halo.

Very rare
4.20%last reported global rate
384
Shadow of Sundered Star

Halo 4: Beat the par score on Forerunner.

Very rare
4.20%last reported global rate
385
Sounds Familiar

Halo 3: This stuff is your history!

Very rare
4.20%last reported global rate
386
You Can't Handle the Truth

Halo CE: Beat the par time on The Truth and Reconciliation.

Very rare
4.20%last reported global rate
387
Get A Load

H3: ODST: Find the 13th Audio Log.

Very rare
4.30%last reported global rate
388
Phantom Hunter

Halo 3: Destroy 3 total Phantoms on The Covenant.

Very rare
4.30%last reported global rate
389
Reed the Strategy

Halo 2: Beat the par time on The Oracle.

Very rare
4.30%last reported global rate
390
Skulltaker Halo 2: Blind

Halo 2: Find and claim the Blind Skull.

Very rare
4.30%last reported global rate
391
Speeding Ticket

Halo 2: Beat the par time on Metropolis.

Very rare
4.30%last reported global rate
392
Vetro Strike

Halo CE: Beat the par score on Assault on the Control Room.

Very rare
4.30%last reported global rate
393
A Pleasant Trip

H3: ODST: Beat the par time on ONI Alpha Site.

Very rare
4.40%last reported global rate
394
Curious

Halo 2: Activate Terminal 1 on Cairo Station.

Very rare
4.40%last reported global rate
395
Mean Streets of New Mombasa

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

Very rare
4.40%last reported global rate
396
Negative, Ghostrider

Halo: Reach: Get a Skullamanjaro in a matchmade Headhunter game.

Very rare
4.40%last reported global rate
397
Well...Maybe One or Two

Kill 25 Engineers.

Very rare
4.40%last reported global rate
398
You Really Can't Handle the Truth

Halo CE: Beat the par score on The Truth and Reconciliation.

Very rare
4.40%last reported global rate
399
Double Time!

H3: ODST: Beat the par time on Coastal Highway.

Very rare
4.50%last reported global rate
400
Keep It Clean

Halo: Reach: Kill 7 Moa during Winter Contingency.

Very rare
4.50%last reported global rate