Your rocks are nondescript blobs. Could be coagulated cancerous tissue, could be melted cheese. No textural clues as to what they are.
Honnestly, at first sight, they immedately reminded me of commodore/amiga games. They do not look like rocks, for sure, they somehow could be cancerous blobs, and I'd dare to say "since they nicely look as such, why not exploit that". I mean, they would perfectly fit an odd planet where ground is made of piles of corrals...
I do agree with the stance comment, and imho, your initial, flat character was better than the current one, which most likely suggests that shading is off. contrast on the clothes is insufficient, and you killed the shape of the head with the way you did the hair.
As for the stance, I'm unsure you made him more interesting that way ... I'd suggest a set of quick paper-sketches where you draw the whole hero with different game-related moods : comfident, exhausted, anxious, determined, this-is-all-too-easy, etc. Then pick up the one that fits the best with your story and gameplay -- I mean not every game character needs to be "I'm kicking all of you, mean bastards" type, but they all need to provide something the player can feel sympathy for.