That sounds familair. I think that has been suggested before. It fits with Kotos' LU roots. I had these others, but they sound more doomsday than that. Perhaps more fitting for final battle chapters than the main theme...
AudioMachine - Guardians at the Gate (Also, some of those other songs are pretty good.)
Two Steps from Hell - Heart of Courage
Chronicles of Narnia: The L.W.& W. - The Battle (at 42:02. Link in discription)
All of these were too 'heroic' for thedude, but they're still so awesome!Â