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I'm talking about the Harley Heads in the Steel Mill where if you press the button, you hear Harley talking through the intercom. I know I have to do something to them, because there's a count for them in the Riddler's challenges under the Steel Mill, just like the Joker Balloons and TYGER cameras.

I've tried:

  • pushing the button several times, but it just seems to annoy her
  • using the explosive gel, but doing so makes him use it on the wall behind the head, which does nothing
  • trying to use the various Batarangs at my disposal, but there's no targeting reticule for them

What do I need to do to destroy these?

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up vote 17 down vote accepted

Shoot a Remote Electrical Charge directly at her head. It should pop off and count it as completed.

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Thanks! I actually figured it out in the midst of posting this, but I figured I'd ask anyway in case others were confused. :) – FAE Oct 31 '11 at 19:04
@FallenAngelEyes The bad part is, I don't recall the game telling me to do this. Someone must have figured it out because I actually came across it while watching a video, and had no idea I had to destroy them. – Doozer Blake Oct 31 '11 at 19:07
Batman destroys the first one in a cut scene after rescuing the doctor in the steel mill. – CyberSkull Oct 31 '11 at 21:06

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