Batman: The Enemy Within - The Telltale Series
30 Achievements
GOG
Behind Enemy Lines
Complete Chapter 5 of Episode 2
65.5%
How to unlock the Behind Enemy Lines achievement in Batman: The Enemy Within - The Telltale Series - Definitive Guide
As all achievements, this achievement is story related, No need for a guide if you don't like spoilers.
EMP Puzzle Solution (taken from video below)
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