Where did I say anything about the shooter aspect? This is about the wall running, plain and simple. That mechanic itself could be considered "stolen" from games, like the Price of Persia franchise. Or the fact that Titanfall stole the first person shooter aspect from call of duty, who stole it from medal of Honor, who stole it from golden eye, who stole it from quake, who stole it from Doom, etc etc. Game mechanics are not trademarked and never have been. Crying that one game stole from another is stupid as any game is free to implement mechanics that have been used in other titles.