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Electronics Specialist

ME1: Use Shield Overload 25 times

Use the Overload ability 25 times to unlock this achievement. Engineers, Infiltrators, Sentinels, Garrus, Kaiden, Liara and Tali all have access to this ability. You must target an enemy or object capable of sustaining damage for the usage counter to increment - pretty much every enemy will count, along with destructible crates.