Just remember: Gordon must get aboard the Borealis and then find a way for the Advisors to meet his pointy crowbar in a very painful way. On the other hand, our eccentric lady from Portal got out for GlaDOS's claws, but there's still some cake out there, eve if it's a lie. She could "actually" join forces with Gordon. Now THAT would make one hell of a plot twist. Can you imagine using the Portal gun to eliminate Combine's soldiers? (drooling)