The SP campaign is pretty busted. There's one mission in which you have to destroy an entire fleet consisting of two battleships, two cruisers, six gunboats, and probably a dozen fighters. The fighters aren't anything special, but the cap ships use their Disco weaponry. That means your rinky-dink Crusader is space dust in about five hits. And pray that your shield stays up, because one hit from a missile against an unshielded hull is instant death.
I'm pretty sure Disco wasn't meant for the campaign, though, and it does have open-SP options. I think it's more fun that way.
