Cell shading

Hello, I’m curious to know about a specific cell shading effect that I’ve seen in Transformers: Devastation. Would you say that was all done by hand, and if so, how time consuming would it be? I’m attaching an example of the game.

36d14186fb83250f025074fc712bf99ea93cf216.jpeg

The unreal 4 support site mentions that there is a post processing effect that I can apply but it doesn’t support reflections or bloom. Is there a way around that?

Cheers,

GS