Halo: The Master Chief Collection achievements

38.44%

343 Guilty Spark

Halo CE: Complete 343 Guilty Spark.

39.73%

Cairo Station

Halo 2: Complete Cairo Station.

39.78%

Standard Operating Brocedure

Complete any co-op level on Normal difficulty.

40.01%

Going Bananas

Kill 100 Brutes.

40.54%

Gruntageddon

Kill 1000 Grunts.

40.56%

THE Chips Dubbo?

Halo 2: Fight alongside the legendary Chips Dubbo and listen to his words.

40.67%

Assault on the Control Room

Halo CE: Complete Assault on the Control Room.

40.77%

Protocol Dictates Action

Halo: Reach: Complete ONI: Sword Base.

40.85%

Sacrifice

Halo CE: Activate Terminal 2 on Halo.

44.69%

Delicious Brains

Kill 100 Flood.

45.03%

Bite The Hand

Kill a 343 developer in matchmaking or someone who has this achievement.

45.15%

The Silent Cartographer

Halo CE: Complete The Silent Cartographer.