Hit The Beach
Halo CE: Beat the par time on The Silent Cartographer.
Very rare1.80%last reported global rate
Steam
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.
Lone Wolf Legend
Halo 4: Complete every level of the game on Legendary difficulty, by yourself.
Very rare1.80%last reported global rate
No Smoking
Halo CE: Disapprovingly look at Captain Keyes' abandoned pipe.
Very rare1.80%last reported global rate
One Got Away
H3: ODST: View the missing link.
Very rare1.80%last reported global rate
Play Us a Sad Song, Claude
Halo: Reach: Listen to a hidden music cue.
Very rare1.80%last reported global rate
Triple Threat
Halo 2A MP: In Ricochet, pass once, score once, and kill at least one enemy in the same match.
Very rare1.80%last reported global rate
Unsolved Mysteries
Halo: Reach: Find Data Pad 12 on Nightfall on Legendary difficulty
Very rare1.80%last reported global rate
What Does It All Mean?
Halo: Reach: Find Data Pad 11 on ONI: Sword Base on Legendary difficulty
Very rare1.80%last reported global rate
Witch Doctor
Halo 3: Find and claim all Skulls in Halo 3.
Very rare1.80%last reported global rate
Bomb Squad
Halo 2: Beat the par score on Cairo Station.
Very rare1.90%last reported global rate
Catherine
Halo 4: Complete all chapters in Spartan Ops Episode 3.
Very rare1.90%last reported global rate
Firefly
H3: ODST: Kill a Drone with a flame grenade on Data Hive.
Very rare1.90%last reported global rate
Heading to his Destiny
Halo 3: Destined for greatness.
Very rare1.90%last reported global rate
Lightning in a Bottle
Halo CE: Beat the par time on 343 Guilty Spark.
Very rare1.90%last reported global rate
So You Don't Want the Tank?
Halo 2: Beat the par time on Delta Halo.
Very rare1.90%last reported global rate
Steady Aim
Win 400 multiplayer games.
Very rare1.90%last reported global rate
They've Always Been Faster
Halo: Reach: Clear Winter Contingency without setting foot in a drivable vehicle.
Very rare1.90%last reported global rate
Wisening Up
H3: ODST: Find the 29th Audio Log.
Very rare1.90%last reported global rate
You Had it Coming
Halo 4: Beat the par score on every Halo 4 level.
Very rare1.90%last reported global rate
"BLAM" Said The Lady!
H3: ODST: Swap Dare's pistol for a Rocket Launcher on Coastal Highway.
Very rare2.00%last reported global rate