First off, just wanted to say I am enjoying this game.
I’ve read in the manual that I can unlock additional races by playing through the game on the various difficulty levels, and I see the “Change Race” button. However, I have now played every mission on every difficulty level (except for the survival and tutorial levels) and I still have a greyed-out “Change Race” button.
Is there something I’m missing, or do I need to download a new patch? (If so, where do I get it?) Please help!