A friend of mine call Blunt made a 2D Parkour Engine and a game for a school project. I am the first one to play it outside of his school and the first to play it on YouTube. Please remember that this is a demo of the final project, he will make a better game soon. In the mean time go check out his moddb page and follow him on Tumblr, also go watch Almanac Pony on Deviant art, they are both awesome dudes and need more fans.

Blunt.
Demented Games; http://www.moddb.com/company/demented-games
Tumblr; http://askblunt.tumblr.com/

Almanac Pony.
Deviant Art; http://almanacpony.deviantart.com/