The way First Win works is really amusing

Not only does it not count the game you played while it reset, you apparently have to restart entire client for it to appear (send the request). Had it in state where it said <1 minute, then it went Completed and disappeared from Missions. I went into game just to see If it's really that unproffesionally programmed and indeed, it appeared in inventory after the game, still incomplete, despite the fact the Mission was already "off cooldown" before I even went into the lobby.

http://i0.kym-cdn.com/entries/icons/facebook/000/022/978/yNlQWRM.jpg