Save Tobi's life, and finish.

Try Blake's patience at the front desk, and finish.

Why don't you try finishing up the tutorial? You might've mastered the first step, but nailing down the fundamentals is what's important.

Perform 1 Brutality

Upgrade any weapon to the next level

Rip apart 1 Olympus Sentry

In The Final Reich, build a Tesla Gun.

Complete Operation Cobra.

Acquire the Bow of Apollo

Complete the game on Human mode.

Clear Mission 17.

Clear Mission 14.

Use proper timing to get a leg up in a close-quarters battle against the boss in Mission 11.