I saw people playing Brink at E3, and thought it looked pretty promising. Bit hard for you to really understand without moving pictures of gameplay, though, so here's some moving pictures of gameplay.
It's the first part of the demo we saw at E3, showing off the game's free-running "autopilot". Hopefully the Mirrors Edge 2 team are watching this and taking notes. Oh, and if you missed it earlier today, the game's been delayed slightly.