Tyranids: One theory states that they came to this galaxy and are moving through it as swiftly as possible because they're running from something. If that something catches up then they're finished. Though there's also the "Just a scouting force" theory. Ofcourse, should they win they would then proceed to leave our galaxy for good. I don't really think it's they're idea of a "victory". Of course if they continue to evolve at such a huge rate they'll eventually become capable of more advanced intelligence, leaving ever piece of biomass in the galaxy with a warp presence... Let's not think about that.
Orks: Too dumb. Eventually they would destroy all LOCAL opposition, then turn on each other out of bordom, until all their numbers were confined to a smaller area where they could be wiped out in a single/handful of strikes... That or the nids get them.
Necrontyr: If the Void Dragon really is on Mars, and it really is waking up, then coupled with the deciever's cunning and their resilience, the imperium would be left without loyal Adeptus Mechanicus support and would be in serious trouble, as would the rest of the galaxy were they to take Terra and have a crack at the webway gate in the Golden Throne. Then again, they may just spark the starchild prophecy, in which case, well, see below.
Imperium: Sceeeeeeerewed, unless the star child prophecy kicks in. The Emperor's compassion, love and general niceness which he cast aside during the battle with Horus all rushing back to give humanity a big hug. And a swift kick in the jaw to anything else. Combine this with several trillion followers and he's going to be the single most powerful god ever to have existed. Chaos is through.
The Tau: ... you're kidding, right? They have no understanding of the universe, hence no understanding of their foes, hence Chaos will slap them silly.
The Eldar: Given that they PLAN on all dying in one final battle for the sole purpose of killing Slannesh, I wish them every luck winning in the long run.
Dark Eldar: Even if they somehow won, they'd then have no more souls to offer Slannesh and he'd start taking their's. They're doomed to fail.
Chaos: All the enemies of the Ruinous Powers could be lying face down in their own blood, the galaxy could be perfect pandemonium and the inevitable happens:
Tzeench starts backstabbign folk for the sake of it, Hell he'd probably backstab HIMSELF if he got too bored.
Khorne would try and murder everything, locking the galaxy in an endless war and maybe even allowing other powers to rise just for a challenge.
Slannesh... Well if the Eldar didn't get him he'll just try and make "Soemthing different" happen to allow him to experience new things, so that would never end well.
Nurgle would sit around waiting for it all to fall apart. Failing that, he'd MAKE it fall apart.
All this depends on the Necrons not succeeding with their plan to sever the Warp form the Matterium.
painfull2006 said:
the nids 100000000..... billions wouldn't count for as much against the tau armada
The Hive Fleet wold extent those freaky tentacle things, eat their way through the hull, start sending a force through and then the Tau would be stuck fighting a melee opponent in a confined space... The kroot wouldn't be able to do jack shit before you think about their support.
