wayne_-zz
@raven_zhong 具体的我也记不住了。看了下外网的攻略，大体意思是在主界面邀请一个人到一场普通比赛中就行，应该都不需要打完，只要被邀请的人接受了邀请并进入到比赛中应该就行。
“On the main screen where you can practise, press start, go to players and click on a name and press the button to invite him/her. As soon as he/she joins, achievement unlocked!
Just make sure you invite to a normal match. Not invite to your league. Hope this helps.”