Probably but you don't need to stay down there for long. Also survival should take priority over anything else.If I had the choice to definitely survive, or the chance to possible survive but screw someone over I'd chose survive, and I am pretty sure most people would too. But yeah, sewer, damaged walls, non damaged walls. Dustbins, big bins, different platforms to jump on.

I think I have thought of a load of ways out. You could throw things as a distraction, cut through things, do a little jig. Throw things to inflict pain.

Plenty of stuff to do :P