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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.

241
A Fine Choice

Halo CE: Complete a Halo: CE playlist.

Very rare
2.00%last reported global rate
242
Catching On

H3: ODST: Find the 28th Audio Log.

Very rare
2.00%last reported global rate
243
Dear Diary...

Halo CE: Activate all Halo: CE Terminals.

Very rare
2.00%last reported global rate
244
Guided Tour

Halo 2: Beat the par score on Sacred Icon.

Very rare
2.00%last reported global rate
245
Hot Zone

Halo 2: Beat the par time on Quarantine Zone.

Very rare
2.00%last reported global rate
246
How Did I Lose All My Fingers?

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

Very rare
2.00%last reported global rate
247
Legend

Complete all campaigns on Legendary difficulty.

Very rare
2.00%last reported global rate
248
Making History

Halo 3: Beat the par time on Cortana.

Very rare
2.00%last reported global rate
249
Skulltaker Halo 2: Iron

Halo 2: Find and claim the Iron Skull on Legendary.

Very rare
2.00%last reported global rate
250
Skulltaker Halo: CE: Black Eye

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

Very rare
2.00%last reported global rate
251
Whispers Across the Galaxy

Halo 3: View the communique from Mendicant Bias.

Very rare
2.00%last reported global rate
252
You're No Chips

Halo 4: What do Marines know about sticks?

Very rare
2.00%last reported global rate
253
Your Attention Please

H3: ODST: Find the 27th Audio Log.

Very rare
2.00%last reported global rate
254
Archivist

H3: ODST: Find the 26th Audio Log.

Very rare
2.10%last reported global rate
255
Betcha can't stick it...

Halo 2: Stick a Plasma Grenade to a Stealth Elite on Outskirts.

Very rare
2.10%last reported global rate
256
Capacious Cartography

Halo: Reach: Create a custom map using Forge World.

Very rare
2.10%last reported global rate
257
Cold as Ice

Halo 2A MP: On Lockdown, kill an opponent with the hanging ice.

Very rare
2.10%last reported global rate
258
Explore the Floor

Halo 4: Trick or force a Hunter to fall to its demise on Shutdown on Heroic or Legendary.

Very rare
2.10%last reported global rate
259
Generous Tipper

Halo: Reach: Beat the par time on Tip of the Spear.

Very rare
2.10%last reported global rate
260
NEXT!

H3: ODST: Complete a Halo 3: ODST playlist.

Very rare
2.10%last reported global rate