I'm playing on Pandemonium, trying to earn the 'TEC civic research only' achievement and some others (culture and no fighters) and I've run into some serious problems. I control about 3/4 of the system, including 2 desert, 2 terran, 2 asteroid, 1 ice planet and 2 metal extractors in asteroid belts. red controls a volcano world which is overrun by insurgents thanks to my culture but which I can't take because the insurgents attack me when I show up and my fleets are busy elsewhere. Purple controls 2 desert worlds, 2 asteroids, and the dead asteroid chokepoint in the center, and he's wiping the floor with me. I have the entire civic research tree, and a dozen refineries and trade ports. every last penny is going into producing reinforcements from 3 frigate factories, but somehow the computer is producing reinforcements faster than I can kill his ships and killing my ships faster than I can reinforce. On top of that, he's also pushing back my culture even though I have 8 broadcast centers. I broke down and cheated by surrendering to get a look at his worlds and found not a single refinery or trade port, only 1 frigate factory, and only 6 media hubs. He doesn't have jump gates, so that's not where all the ships are coming from. I've already pretty much lost at this point, since all of my experienced capital ships are dead, but I'd really like to know just why many hours went down the drain just as it looked like I had 4 achievements in the bag. Any ideas?
You could just reload the game and take over the AI and see everything he has built or researched, as it is now your own.