Arknight- Colonialism

A space colony ship crashed on Terra. I slept for ten thousand years, and when I woke up... What? Earth is destroyed? What? The native human race of Terra is destroyed? What? There are sea monsters in the sea? What? There are warp demons in the Arctic? What? There's Originium in the air? What? There's a fluid barrier in the sky? What kind of ultimate cesspool is Terra? Doctor, can you explain this to me? Otherwise, I'll just wipe the whole of Terra out of control!