Story Progression in Act 2 - Chapter 3 (any difficulty setting)

Defeat George Human Boss

Melee 5 enemies in a row.

Destroy three enemy robots at once with one hand grenade.

Level a weapon up to maximum operational capability.

After taking control of the enemy transport in Act 2-2, do not let a single enemy escape.

Scan and acquire all weapons.

Complete a Special Ops Mission Mode game with the same number of kills as your partner.

Survive 1 wave in a Special Ops Survival game.

Destroy two or more enemy robots at once with the LFE gun.

Destroy ten incoming missiles or grenades.

Manually trigger AR Mode and destroy three enemy robots in a row.