Great work, really nice. I love the Infinity figures but my skills just can't do them justice Love seeing how other people do them though. 
The amount of detail on them makes them easier to paint, in my opinion, than a lot of other models out there. Those troopers were painted using the army painter method of color spray primer, base coat, washes, layer midtone and edge highlight. Obviously there's some skill involved in the application
but compared to painting say a large cloak it's much easier.
