Lol Flood in game =/= Flood outside the galaxy The Flood alone could potentially solo the Star Wars universe, THAT is how powerful the true Flood is. The Flood we've seen in game is a phantom compared to the real deal. If the Flood establish a Keymind there is literally nothing that can over power it's raw computational power. Not to mention that Precursor tech is invulnerable to any source of damage except that of the Halo Array. And you think StormTroopers can exterminate the flood. Lol