Open with one city-and-missile loop.
A short Missiles vs Cities session works better when the first goal is concrete: build up the city, test missiles, collect cash, then upgrade the part that keeps the next fight from working.
- Upgrade the first city piece before chasing every weapon.
- Use missiles on targets you can handle cleanly.
- Watch whether city strength, missile timing, or cash is the blocker.
- Spend on the step that failed first.