Some of it (maybe even a majority) was probably in-game. However, I can pretty much guarantee you the scene where they blow up the gate and all the APCs come charging in was NOT in-game. Did you see how realistic that explosion was? With NO frame-rate drop? NO game on ANY platform, even PC, can currently render that in real-time. None.
Not trying to be a fanboy. Of course, it's hard when you own the best console eve... dang it








