Love the look and feel. This aesthetic and premise could carry you far, even in a longer experience or series of vignettes. I would genuinely feel excited to explore a larger desert, find and talk to more survivors, and read more of the evocative flavor text on the scrap. I wish there was more!
Other than the jam-appropriate length, my only real issue is that the choice of font made the text a little hard to read. Super cool stuff!