Expendables 2 footage turns up on YouTube
It definitely looks like the unannounced tie-in to The Expendables 2 is a thing, because you can watch someone play it.
The video below, dug up by Superannuation, may have been pulled from the developer-facing version of Xbox Live, as such leaks often are.
The Ubisoft-published titles has been rated by the Australian Classification Board, which means it must be in a close to finished state - although as you'll see, the version presented below looks a little rough, with glitches and even typos quite obvious.
The gameplay looks to be mainly a twin-stick shooter affair, probably with four-player co-op.