"Pack hunters I can handle," he assures him.
What? He's seen the Jurassic Park movies. He's got at least some idea what he's up against.

The kid zooms out of sight again, leaving Oliver to focus on the gangsters. Men with guns he can handle far better and it doesn't take long to thin out their numbers and either disarm or incapacitate them so the remaining creatures aren't continuing to wheel in panic and smash into buildings.