Shell-Walker Adapts & Improvises - Horizon Forbidden West 

They really put a lot of thought into the machines and how they behave. Especially in Zero Dawn, get in a spot where you can watch the snapmaws at work. The pouches on their back will fill as they clean the water. When full, they eject the pouches so they can be recovered by transport machines. The scroungers and glinthawks are also fun machines to watch as they cut up destroyed machines for recycling.

There are lots of neat little details like this all throughout the game.

They really threw us a twist with Olin. Here is something else to think about... once you get through Zero Dawn Gaia has these machines out there cleansing Earth and improving the environment. They're doing what Gaia wants them to do. And you're out there killing them just so you can get a bit of wire to make your sling throw a bigger bomb? Okay, okay -- the cauldrons can pump out more so not too much of a worry but still...what does Gaia think about that?

The appearance is the Oseram Explorer with the ash & coal dye. The actual outfit is the Utaru Winterweave which I used to minimize the chance the shell-walker would react to Aloy's presence (go into attack mode instead of retrieving the container).