I did it with my two deaf friends and a guy from Australia.
2nd Friend- Missouri
3rd Friend- Wisconsin
4th Friend- Australia
Let me tell you this, I didn't think we would make it before we start this because how far apart we are especially this guy from Australia that it would disconnected us in anytime. It didn't. We made it and got endure achievement. BUT it was laggy as hell in the whole firefight, maybe 10-15 seconds lag, it was annoying but we got used to it.
Now, Im on my new GT and will start on Endure again. Love ODST!