Extremely promising and your art style is a delight though I have to ask, why the insane amount of rocks?
I see, might I suggest using some mt moon/rock tunnel textures then? Make a few big rocks and have the smaller rocks more concentrated around the bigger ones so they're more decorative and less of a hassle, could also try placing some buildings on rock mounds although the game already has problems with loading zones so I'm not sure if that would exasterbate it or not, your call ultimately