Vanilla game crashes halfway through human tutorial, Xubuntu 13.10

Right when I get the shotgun, and shoot whatever the thing that has wings is (I'm sorry, I'm brand spankin new to this stuff), the game immediately dies on me.

I've got an AMD FX 8 core, a GTX 670, and 32GB RAM. running Xubuntu 13.10, which I reinstalled yesterday. I've attached a full dump of my system information if any other details are necessary.