[quote=duck55223]
The fact that there is a large parasitic hivemind intent on consuming everything? And the Ethereals who keep on killing god knows how many civilians and turning htem into horrifying creatures.
[/quote]

How believable do you think "alien parasite which causes zombies" and "ghosts which are running round murdering shit" are without seeing it first time? I'm willing to bet they'd want hard proof...