I am still playing this Campaign but I hit a very big stalemate when I found a wormhole. I had to turtle really badly and then in the end I cheated by wiping out a large chunk of the Invaders. I didn't just scrap the game though, since I wanted to fight them a couple of times and test my designs and I also want to see how this Galaxy pans out so I am keeping an eye on the NPRs and am about to start exploring again too.