For some reason the trigger word must be used with an increased weight (1.4-1.5) to get the intended results.
The prompts for the showcase pictures were:
"(frostpunkai:1.4) *** , freeze, steel (amazing, Impressive lighting, muted colors, Ultra Realistic, trending on artstation, exaggerated, detailed background:1.1)"
where *** is
coffee machine, rugged, improvised, emitting warm steam, snow
Snow-crawler vehicle on scouting mission, treads leaving deep trails
Advanced coal mine, conveyor belts creaking under frost
Cookhouse stoves burning, automated food dispensers
Sawmill operations, buzzsaws and steam hissing, cutting through frozen logs
Charcoal kiln, controlled fires within iron cages
Guard towers, searchlights powered by small steam generators
Resource depots, metal and steam construction to insulate goods
Engineer adjusting steam generator, face glowing red from heat
Scouts checking snow-crawler treads, tense from cold
Foreman shouting orders near industrial hothouse, urgency in posture
Radio operator inside advanced beacon, adjusting dials
Hunter teams setting out into white void, bundled in furs and armed with harpoons
Orphanage barely heated, kids huddled in patchwork blankets
Fashion woman
Soldiers
combine harvester
tank
thumper
I'll upload (as training data) the comfy workflow used for the showcase pictures later,
Useful support words: black & yellow, industrial, heavy duty, modular
Perpetual coffee request: Keep me motivated and caffeinated: