I need help with the Ascendancy Wars campaign Calethaon mission because it is rather frustrating.
You defend the mountaintop Turinium generator until you get enough victory points. Here is how I failed the mission:
First attempt: I did not expand beyond the moutaintop and I built a lot of smart turrets. When the Turinium generator got about half full the enemy sent a massive force and overwhelmed the turrets even though I built a repair bay.
Second attempt: I expanded beyond the moutnaintop but found I could not hold the territory and my large army with lots of artillery I earned with all those extra metal and radioactives died when the turinium generator was half full and the enemy sent a massive force.
What I plan to do next is: Build lots of Brutes to eat up my extra metal income, build Zeus to eat up my extra radioactives income. Hold the southern metals site and the eastern radioactives site with this army. When the aircraft show up and bomb the north of my base stop all production and build lots of Apollo. When the turinium generator is half full and they send a massive force, fall back to the mountain and use my army to hold off the enemy while I build smart turrets and a repair bay.