Well, that was definitely effective--they were somewhat reminiscent of those droids she'd had to fight through now and then. Definitely a reason to do it more often against these scrap heaps... Shepard quickly turns her attention to the next group, backing her way towards the people surrounding Yukiko. As she goes, she summons up another Heavy Slam for the Guardian closest to her, surely resulting in its end as well.

"I'll appreciate it when we're not at risk of getting the kid killed!" Shepard looks to Zero once she's close enough. "Hate to ask a fresh face for this, but is there any clear way out you can see from here?" Not that she hadn't gotten used to the contours of the districts yet, but something about him just screamed synthetic--he might be able to figure out a better route than she could under the circumstances.