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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.

261

On Your Toes

H3: ODST: Find the 25th Audio Log.

Very rare

2.10%last reported global rate

262

Saturday Morning Cartoon

H3: ODST: Is there a toy inside?

Very rare

2.10%last reported global rate

263

Skulltaker Halo: CE: Fog

Halo CE: Find and claim the Fog skull in remastered mode.

Very rare

2.10%last reported global rate

264

Striking Fear in Their Hearts

Win 350 multiplayer games.

Very rare

2.10%last reported global rate

265

All According to Plan...

Halo CE: Kill the first group of enemies on The Truth and Reconciliation without being detected.

Very rare

2.20%last reported global rate

266

Checking Out Your Options

Halo CE: Complete a match on at least 4 unique game types.

Very rare

2.20%last reported global rate

267

Considerate

H3: ODST: Find the 24th Audio Log.

Very rare

2.20%last reported global rate

268

Like Peanut Butter and Chocolate

Halo 2: Complete a level in co-op on Heroic or Legendary with the Masterblaster Skull active.

Very rare

2.20%last reported global rate

269

Now Just You Gúta Minute

Halo: Reach: Beat the par time on Nightfall.

Very rare

2.20%last reported global rate

270

Scurty Bump

Halo CE: Beat the par time on Keyes.

Very rare

2.20%last reported global rate

271

Skulltaker Halo: CE: Pinata

Halo CE: Find and claim the Pinata skull in remastered mode.

Very rare

2.20%last reported global rate

272

Spotter

H3: ODST: Find the 23rd Audio Log.

Very rare

2.20%last reported global rate

273

Wait, How'd the Ship Get Down Here?

Halo: Reach: Beat the par time on The Pillar of Autumn.

Very rare

2.20%last reported global rate

274

Adventurer

H3: ODST: Find the 22nd Audio Log.

Very rare

2.30%last reported global rate

275

Artifact

Halo 4: Complete all chapters in Spartan Ops Episode 2.

Very rare

2.30%last reported global rate

276

Consumption Junction

Halo CE: Beat the par score on The Maw.

Very rare

2.30%last reported global rate

277

Get Me Out of Here!

Halo CE: Ride in a Pelican for several seconds on the level 343 Guilty Spark.

Very rare

2.30%last reported global rate

278

Info Dump

Halo: Reach: Find Data Pad 6 on Exodus

Very rare

2.30%last reported global rate

279

Jorge Can't Have All the Big Guns

Halo: Reach: Use a Pelican turret.

Very rare

2.30%last reported global rate

280

Knight in White Assassination

Halo 4: Assassinate a Knight in any Spartan Ops mission.

Very rare

2.30%last reported global rate