I used to play Final Fantasy XI obsessively with my brothers. This is a Dark Knight from the game.
This started out as a doodle and ended up much more elaborate than I expected. The armor was quite a struggle for me I think mainly due to the lacked of lighting reference.
Done in Painter, Photoshop. About 14 hours total time. I used a picture as reference for the sky.
Check out detail of the paint here [link]