The video game Borderlands has a very particular design called cell-shading, which gives it a comic-book aesthetic. It’s a style that has inspired many Warhammer painters, including lorrenik on Reddit, who has started a whole Tau army based on that theme.
It’s a really unique look in the 41st millennia and definitely stands out on the battlefield.
The artist has already shared other figures in the same style, including this impressive Tau Stormsurge.