This is the very first achievement you CAN unlock for this game.
As soon as you take control of
Juliet, stand still and only use the

to look under her skirt. Do this
"while swinging from the left to the right looking at her back or you can also simply HOLD IT" until the achievement pops.

Here are visual guides for everyone who needs it and has REAL PROBLEMS

to unlock it:
Credits goes to
*Four6Eleven* &
*PowerPyx*