This is the Brollyant Achievement Guide for Alice: Madness Returns! Enjoy!
You'll run across Bitch Babies in chapter 5. You'll know them when you see them because the first time you run across them a subtitle will appear at the bottom of the screen telling you their name. They're doll heads with 4 or 5 spinning doll legs attached to the head so they can fly. They have two attacks. One is a charge attack, and they're always low to the ground for this one. Just dodge it with RB. The other attack, they'll be flying for, and this attack is to spit green acid at you. Target the Bitch Baby with LT, and once they spit the acid, deflect it with A! One deflect with kill it. Do this ten times to ten Bitch Babies and the achievement is yours! Happy gaming!