The only thing you finished was Truth and other than that there's still problems withing the Halo universe or there's new problems that it opened up. [b]1:[/b] Even with Truth dead there will still be remnants of this huge empire out there which can lead into possible problems. Look at the Empire in Star Wars. Just because you kill the head guy of it doesn't mean what ever he created is gone. There were still head people of it that became war lords. For a real world example there's Hitler. When he killed himself the guy that was in charge of the U-Boats took over for him. [b]2:[/b] Correct me if I'm wrong, but weren't the Halo rings still on standby? So that there can lead into something. [b]3:[/b] With one of the Halo holograms one looks like it's infested by the flood. If that's the case then the Flood isn't done with. Above when I said possible problems with remnants they can come into play with this. They find this ring and land on it which results in the Flood tanking over their ships and leaving. [b]4:[/b] Another thing about the Flood is that they were found at a few places. In Halo CE and Halo 2 they were found on Halo rings, in Halo 3 there's a possible Flood infected ring and there's the Flood in Halo Wars. So there are other possible locations that the Flood can be at. [b]5:[/b] The Flood can simply build another Gravemind. In Halo CE they were building a Proto-Gravemind which is the start of a Gravemind. There's also that Halo graphic novel that shows one being made. So this is another problem the remnants can make. They land at some Forerunner Flood infested area and they get assimilated along with other biomass to make another Gravemind. [b]6:[/b] There's shield worlds out there that protects you from the Halo's so there could be Forerunner's still out there that can be a problem. [b]7:[/b] There's that Legendary ending that shows the Chief drifting towards Requiem which was unknown at the time. So that right there leaves a whole bunch of questions and possible problems which it did.