A modern revival/recreation of the Human icon theme (a.k.a. "Zombie", get it?)
Zombie is distributed under the terms of a Creative Commons Attribution-Share Alike 4.0 license.
To use "Zombie" copy the icon theme to your Home folder:
cp -r Zombie/ $HOME/.local/share/icons/Zombie
cp -r Zombie/ $HOME/.icons/Zombie
and choose it from a tweak tool or use the terminal:
gsettings set org.gnome.desktop.interface icon-theme "Zombie"