Sabotage a dreadnought.

Win a political stand-off.

Defeat a Harvester.

Destroy an Atlas dropped from orbit.

Stop a Cerberus kidnapping.

Modify a weapon.

Kill a brute while it's charging you.

Chase down an assassin.

Destroyed all the Helghast Tanks in the Senlin Beach section

You showed millionaire Hugh Darrow that his logic was flawed.

Completed weapons training in Prologue

Use the Deadeye to kill 20 snipers