Snipe down the ship on Geonosis

Slice your first console

Rendezvous with Delta 62

Engage in all optional conversations

Use bricks or bottles to lure an infected into attacking a human

Win the water gun fight

Play the Jak X game in Left Behind

Win the brick throwing contest

Collect all comics

Break into every locked door using shivs

Find all training manuals

Upgrade and then break one of every melee weapon

Leave Ellie hanging after a job well done