male character, miner, (30yo), rugged appearance, stubble, hard hat with light, denim overalls, plaid shirt, steel-toe boots, holding pickaxe, action pose, underground tunnel, gemstones, ore veins, dirt texture, rock structure, dim lighting, headlamp glow, side view, 3/4 composition, ambient light, cool math games theme, pixel art style, retro, vibrant colors, detailed background, depth of field.