The Episode 2: Brave New World Add-on for Life is Strange: Before The Storm has 11 achievements worth 300 gamerscore.
Complete the optional graffiti #8 in Episode 2: Brave New World
Complete Episode 2: Brave New World
Complete the optional graffiti #10 in Episode 2: Brave New World
Complete the optional graffiti #9 in Episode 2: Brave New World
Complete the optional graffiti #6 in Episode 2: Brave New World
Complete the optional graffiti #7 in Episode 2: Brave New World
Complete the optional graffiti #5 in Episode 2: Brave New World
Complete the optional graffiti #4 in Episode 2: Brave New World
Complete the optional graffiti #3 in Episode 2: Brave New World
Complete the optional graffiti #2 in Episode 2: Brave New World
Complete the optional graffiti #1 in Episode 2: Brave New World