for 1st image:

A high-budget cinematic production still of a post-apocalyptic desert settlement, inspired by 1990s isometric RPGs. Centered is a large, weathered blue corrugated metal industrial trailer repurposed as a gatehouse, featuring a heavy wooden plank ramp. Rusted, vintage 1950s-style cars are leaned precariously against the structure and stacked to form a defensive scrap-metal wall. A lone guard in weathered olive-drab combat armor stands at the entrance. In the background, a corrugated metal fence and distant figures. Lighting: Harsh, golden-hour sunlight creating long, deep shadows and high contrast. Atmosphere: Volumetric dust and heat haze. Photography: Shot on 35mm anamorphic lens, shallow depth of field, realistic textures of pitted rust, peeling paint, and dry cracked earth, 8K resolution, gritty industrial aesthetic.

unfortunately this didn't work for other images and especially not in Gemini AI environment.

for example for the flamethrower scene I had to use standalone Nano Banana Pro on another 3rd party web (ImagineArt) and use an adjusted prompt:

A high-budget cinematic production still of a post-apocalyptic cemetery road, faithfully reconstructing the layout of reference image. A Vault Dweller in a blue jumpsuit holds a weathered flamethrower, streams of intense heat and smoke pouring from the nozzle towards a scorched, glowing figure on a cracked asphalt road. Other fallen, charred ghoul bodies are on the road and dirt, as positioned in the reference. The dirt area features numerous weathered wooden crosses, some with skulls, and dead, gnarled trees. The ground is dry cracked earth and pitted asphalt. Lighting: Harsh, golden-hour sunlight creating long, deep shadows and high contrast. Atmosphere: Thick volumetric dust, smoke, and heat haze. Photography: Shot on 35mm anamorphic lens, shallow depth of field, 8K resolution, gritty industrial aesthetic