I was knocked out of a game last night and was observing the remaining action, when a thought popped into my head. It is relatively unlikely, but possible that a no-win scenario could be reached. If enough HQs have been demolished, such that there are fewer than four remaining on the board, then for a player to win, they must trade in cards for a star or complete a mission.
So, if a player is able to wipe every other faction off the board, thereby controlling all remaining HQs and leaving no legal start spaces, but in doing so does not achieve a mission objective or leave him/herself with enough cards to trade in for a star, there'd be no way for that person to officially win.
If I were on the losing end of a game like that, I would have no problem giving the win to that player, but I don't believe the rulebook makes any sort of mention of what to do in this (admittedly unlikely) scenario. Any thoughts?