Parkour!

When it comes to manuevering through buildings and down streets, you make the concrete jungle look like a playground.

When making an Acrobatics or Athletics check that involves freerunning or parkour in anyway, such as running along a wall or vaulting over something, you may add 1d6 to the result of the check.

At the start of your turn, you may make an Acrobatics or Athletics check (DC = 15), on a pass, you are not affected by difficult terrain.

When making either a high or long jump, as long as you have a running start, instead of standard jump distance calculations, instead simply make either an Athletics or Acrobatics check, and you travel that many feet.