But two more copies of Hack Job had already appeared, and the scalpel spiders were responding to some unknown directions, leaping for Mark and Amy.
You guys are vastly outnumbered, right now, and the enemy can take your power away. You only really had that one shot.
Amy grappled with one spider, struggled to bend its legs the wrong way, cried out as the scalpels and needlepoints of the other legs dragged against her skin.
Ouch.
A blast sent her tumbling, throwing her into the couch and dislodging the spider. Mark could make his orbs concussive or explosive.
Why can he still make his orbs at all?
He’d hit the spider with the former, nothing that could seriously hurt Amy. She climbed to her feet, picked up the oak side-table from beside the couch and bludgeoned the spider with it.

(source)