Acquire 6 or more friendly Stalkers at the same time in the Campaign

Used the Arc Tool to activate a Stalker rack

Found the Arc Tool

Destroy a Titan with your Laser Core in the Campaign

Kill a Caged Prowler in the Wildlife Research Labs

Eliminate a player while you are emoting

Destroy a Mercenary Titan with a melee execution in the Campaign

Destroy an enemy Titan as a Pilot in the Campaign

Defeated the Reapers in Ash's Simulation Dome

Entered the World Foundry

Defeated Kane

Defeat the Ninth Sister