The red laser light of the gun found the Angel's "eye" and squeezed a round directly for its face.  Almost suprisingly, the shot cleaved directly through the monster's AT field, guided by the telemetry sent by the nearby VTOLs, shattering the energy barrier like a pane of cheap glass before slamming directly into the monster's eye, penetrating and sending a massive chunk of its head exploding outward!  Whatever that monster was going to do, it wouldn't have much depth perception to do it with.