I stopped in the middle of playing.. just got the game btw but anyhow after you go into the large sink hole next to the City Hall I think.. You go into the Hive and the next level loads.
Heres the Fail--
After I enter the subway system theres a pipe with water and hole in roof similar to FarCry with Sun Beams .. except its NIGHT time.. lol

Anyhow the game is aiiight so far Bravo Crytek!