A couple problems I am encountering
1) I am not sure if it is just Chapter 2, but it seems like it: I play everything on the hardest level I am allowed to in games. For some reason if I die though in Chapter 2, and I happen to be in the middle of giving a command, the entire scenario starts over (single player). So I haven't got through it yet. If the Space Bar is being pressed in anyway to give a command at death it immediately resets the scenario to the very beginning as if you chose restart.
2) I cannot locate the chat key in the options menu. It isn't listed.