No problems with tunneling since I don't have any objects moving super fast, I did have problems with the player ship angular velocity turning into NAN at times. But a couple of checks if variables would turn into NAN eliminated this problem.
I'm using raycasting for the laser beams seen in the trailer, works nice. I did a few modifications but nothing major. I have bouncing lasers and that I implemented outside of Farseer. I don't know if this is possible to do in Farseer, on collision
work out the reflecting vector?
It will be interesting to look at Farseer 3 now :)