Pixel art for a dark 2D side-scrolling action game set in...

Pixel art for a dark 2D side-scrolling action game set in China's Three Kingdoms era, around 200 AD. Muted low-saturation palette of dark blues, slate greys and earth browns with very small dull red accents. Large crisp pixels, flat shading, no characters, no people, no text, no UI. A long strip seen straight from the side, occupying only the middle third of the image and running from the left edge to the right edge with a perfectly straight top edge and straight bottom edge: the vertical front face of a low earth-and-stone bank, packed dark soil with embedded flat rocks and a few hanging roots, a thin line of moss along the top edge. The background is one plain solid magenta colour (#ff00ff) with nothing else in it, for chroma keying.