For those who've completed the game, what was the hardest puzzle?

[DZ-Jay]

@rodrifra

That was the only puzzle I couldn’t solve. And it was the fact that zapping the door didn’t have any comment like “hmmm that might have worked” or some cliking sound indicating the door was open. When a friend told me the solution I couldn’t believe it, I had tried that and didn’t work (well it did, I just didn’t try to open the door fom the outside). On second thought it was logical, that mechanisms to open the door use electricity

When you zap the door lock, the little light turns green for a brief moment. That indicated to me that it got unlocked.

Also, when I zapped something non-electronic, made a comment like “that doesn’t use electricity…”; which suggested to me that anything electric was game – including electronic card-reading locks.