Throws Croc so hard into a steel girder it breaks.

The creature lashed out with a backhand sweep of his right arm, and Batman leapt to the left, avoiding it neatly. He caught the arm and torqued it into a hammerlock, planting a foot in the middle of Croc’s back and driving him forward headfirst into one of the steel girders that supported the stairway.

The girder snapped off at floor level, and the whole staircase sagged.