When Nico disappeared inside the building Max realized that he had maybe, possibly, made a tactical blunder. It only took seconds before the screaming flooded the Rebel communication channels, making it impossible to track their movements and orders through the confusion.
[What in the Feth is she doing to them in there?] Colonel Klinger asked in annoyance as he gave up on trying to track enemy movement.
[Sorry Colonel. I set the Plasma Cannon to wide dispersion and it caused a minor chain reaction fire when it hit the infantry. They should calm down in a second.] Nico replied, but Max could see her data coming up on his firing solutions, and that didn't seem likely.
That Archangel suit was just an unfair advantage, allowing her to drop directly into the middle of the enemy's command area and go anywhere that a regular-sized human could, with the firepower of a Light Mecha.