Ghostwire: Tokyo

You should have access to everything the game has to offer from Chapter 4.

If you go any convenience store or shrine shop, you can purchase the necessary talisman for any achievements.

In this instance, we need Exposure Talismans.

Best thing to do is find a group of visitors (not super strong ones) for your standard combat encounter in the street. Or any cube/yokai defense encounter. Once there’s a few close together, pop one of the exposure talismans on the ground to expose their cores.

You can then hold LT to grab all exposed cores and destroy them.

You must kill a total of 10 Visitors this way, this is very straightforward.

Pretty easy to get, once you can use them I suggest buying a few from the shop they are 7000$.

Now you could use them in standard encounters to chase the achievement however an effective and cheaper method I found was to use the exposure talisman during a magatama event.

The magatama event I’m referring to is the one in which you have to defend a watermelon spirit that takes refuge within a tree.
Simply drop your talisman on your location whilst standing in front of the tree, enemies will naturally just rush you and here you can expose 3-4 enemy’s per usage.

Note, bigger and stronger enemies don’t immediately get exposed the smaller and standard visitors do however