A Little Off the TopG 10

A Little Off the Top G10:
Change the appearance of 10 Dwellers in the Barbershop

This achievement requires you to first build a Barbershop, which will require you to have at least 50 dwellers in your vault. After you have built it, just grab a random dweller, put him in the barbershop, select a hairstyle, it doesn’t matter what as long as it’s not the same kind as they already have, and make him get his hair cut. After you have made 10 dwellers look as crazy as you want, this achievement will unlock.