Arknights? The Colonial Ark!

A space colonization ship suffered an accident and crashed on Terra. I slept for ten thousand years. When I woke up, what? Earth's done for? What? Terra's native humans are done for? What? There's Sea Terrors in the ocean? 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 shithole is this Terra? Doctor, can you explain this to me? Otherwise, I'll smash all of Terra to bits!