This is an exercise in level design and modelling, a scene made in Blender for Blocktober, the yearly level design event where people were encouraged to make very quick blockouts of maps for all sorts of games. The prompts I used were "Mountain Cliffs" and "Overgrown Ruins". For me, Blocktober was about speed, so this scene isn't too detailed or complex. Ultimately I didn't even make too many scenes for Blocktober.
The rat sprite was made by me and the textures are dev textures from the Arkane Dimensions mod for Quake 1.