Mighty No.9, a side-scrolling action game being developed by Comcept. You may recognize the developers name from their work on Soul Sacrifice. Famous creator Keiji Inafune is working on the game too, who has an extremely successful past history of games. You need to blast through robots to gain their power to do cool activities such as get magnet hands and go up walls, or even a tank like robot who can demolish everything in its way. The game will release in Spring 2015 so it is a while off yet. It is not necessarily coming to Vita but it has just reached the Kickstarter so hopefully it is OK (fingers crossed).
Mighty No.9 rumoured for Vita