Batman: Gotham Knights

You walk down the sewer corridors towards Killer Croc's hideout. It's nicely furnished for a sewer, with a couch and a television. Suddenly you hear a splash. You turn and see Croc, popping out of the water, on the offense.

You jump back, landing in a fighting stance. Croc roars. He towers above you, and mano-a-mano you may not be able to beat him, especially in this small, enclosed space. Maybe you can lead him topside.

However, running away may be what Croc wants you to do, and he'll slip away at the same time.

What do you do?