Halo: Reach achievements

67.86%

I Need a Weapon

Completed the 4th mission on Normal or harder.

72.58%

Swap Meet

Traded weapons with an AI ally in Campaign.

74.21%

Protocol Dictates Action

Completed the 3rd mission on Normal or harder.

76.94%

That's a Knife

Performed an Assassination on an enemy.

77.89%

An Elegant Weapon...

Killed 10 enemies in a Firefight or Campaign session with the DMR.

81.30%

We're Just Getting Started

Completed the 2nd mission on Normal or harder.

82.14%

The Start of Something

Reached the rank of Corporal in the UNSC.

83.04%

Make it Drizzle

Purchased an item from the Armory.

88.87%

Doctor, Doctor

Used a Health Pack to replenish life after taking body damage.