What if Hitler won?

News Today:
Hitler wins war in Europe and Japan Nuclear bombs America and we are screwed! GOD HELP US!
We are all going to die.And Hitler has taken a new name for his Nazi's: The Covenant! We are relying totally on Spartan 123321 to save us (and Assassin 927). He will defend us! (hopefully)...
However, Aperture science teams up with the survivors of the war and starts working on a prototype Portal Tank.
And then We all roll up big fat blunts and get high.