Jump Motherfucker Jump
Thaka, you've got infravision, not the ability to see perfectly in the dark.
However, judging from the heat given off by the buildings to keep them warm, you'd say the shooter is three buildings down and one building over. You'll have to make a Jump check (a DEX check) to make it across each one.
Go for it dude. Of course, right at your feet, Theodore is bleeding. He's at -2 I think and dropping.