Its not bad having a dull atmosphere in a game, blasphemous goes pretty well in that kind of art style, it's inspired by the dark souls games visuals, look it up it looks great
I like it. The eye coloring and shading is pretty nice and I like the pixelated graphics. I'd love to see what it looks like animated. The only thing I'd add is a llittle bit of darker lining on the underneath. To give some pop and separate him from the background. It's a cool design.