gremlins mae
well when i wrote that i tried to cover all levels of severity, from a simple panic scenario, where you just run, to a full scale riot on the streets. some cities are very large and it could take a fair amount of escape and evasion to get out, im not saying you need any tools at all, or anything except your legs, a normal person of average fitness could make it out with nothing but common sense, but as preppers we should aspire to be ready for scenarios outside the norm.
heres a scenario, unlikely yes, impossible no.
your in a city, said city is being invaded by another countries army, you know the direction of attack, and the opposite direction is an area unfamiliar to you, you bring out your map and make your way toward a harbour, along the way hostile forces are encountered and you must make a high speed detour, using your map you change your route, nearing the harbour a fanatic nob tries to rob you in the panic, you knock him out, you find a boat being readied by its owner and use your barter items to gain a fare on his boat.
in me eyes a survival kit should enable you to survive the maximum amount of scenarios whilst remaining in certain parameters. for an urban environment that would be me survival kit, easy enough to carry everyday and versatile enough to get me out of the majority of situations