Until the last moment, Thor is doing his best to thin out the numbers. For as long as he can he's pretending not to hear it until he feels satisfied with how much damage he's done on the hoard. He won't strike up a debate now, but Stark might, and he hasn't the patience for it.

As such, Stark is getting a good shove in the safest direction, Thor keeping to his back to fend off any approaching spiders while he can. "Keep your wits about you." He calls out after Steve, urging Stark forward as he comes.