Kinect Star Wars
50 Achievements
1,000
40-50h
Xbox 360
Two-For-One Discount
Defeated at least two droids with a single use of Force powers, alone or with a friend.
10
How to unlock the Two-For-One Discount achievement in Kinect Star Wars - Definitive Guide
This is pretty simple, hold a droid with your force power and throw them into another and it will pop. pretty easy achievement to be done. most likely do it with out knowing
Another easy way I found to do this is just when there are some droids bunched up, charge a force push and launch it to them if you manage to hit at least 2 droids the achievement will pop. As soon as you finish training with Yoda a big mob of droids will attack you, perfect place to do this, at the end Kashyyk mission 2. Just an alternative way to do this.