The Proxy Campaign is a mini-campaign within the greater Plazma Burst 2 Campaign. This area of the campaign allows the player to switch from controlling the Marine to playing as Proxy in Level 30 to 36. The Proxy missions only take a few levels, which are violet in color, whereas the Marine levels are usually colored in blue.
The levels begin with Proxy narrowly dodging Civil Security officers, and making her way out of a supposed prison. Proxy immediately picks up weapons and proceeds to fight her way through the Civil Security arrangements. Proxy unknowingly makes her way into the middle of a war between the Civil Security and the invading Usurpation Forces. She has to fight her way out of this mess of enemies, and later encounters a new ally.