"Who ... who is THAT?" Linda exclaimed. She didn't know who this strange woman was, but Eobard Thawne was her lover? The Reverse Flash?
It didn't matter. Clearly the strange woman was one of the bad guys, and working for this 'Conqueror', whoever the Conqueror was.
Hummingbird followed the strange woman around the city, encountering portals all over the place. Out of them emerged Daleks, Cylons, Battledroids, Cybermen, and other metallic robot-like creatures that she didn't recognize, but seemed hostile just the same.
EXTERMINATE!
EXTERMINATE!
EXTERMINATE!
Linda's incredible speed enabled her to dodge the Daleks' blast easily enough, but she was worried about others who were not as fast. Quickly, she zoomed in front of the Battledroids. The Battledroids, being mostly just programmed mooks, just fired at her because it was their programming to fire at designated hostiles and didn't pay attention to what else was in the area. So she quickly zipped between them and a bunch of Daleks, causing them to fire at her. They missed her and hit several Daleks, severely damaging them. The remaining Daleks turned and opened fire on the Battledroids. "EX-TER-MINATE! EX-TER-MIN-ATE!"
Several Battledroids were destroyed by the Daleks' blasts. The remaining Battledroids began going insane and just firing at anything that moved, including a few Cybermen. Soon almost all of the Battledroids in the vicinity were blasted apart by a combination of Dalek and Cybermen blasts.
Linda then zoomed past several classic Cylons, zipping between them and getting a few to shoot each other before the rest realized she was moving too fast for them to accurately fire at.
She still needed to catch up to the strange woman. The various robot or metal creatures around them were a distraction. The strange woman and the Conqueror were what mattered.