Hellblade developers Ninja Theory are one of the numerous Microsoft-owned studios currently facing a very uncertain future, as the company look to either spin off or shutter a bunch of the developers under the Xbox banner. In Ninja Theory’s case, the news that their existence hangs in the balance was made even more jarring by the fact they’d revealed a new game, Senua, earlier this month at Xbox’s summer showcase. According to a fresh report, however, Microsoft had already decided…