Great campaign. I do have to take issue with a certain mission, though. The one where you have to distract the Mammon is just bad. First of all, it's hair pullingly difficult, and not the good kind where it's a great challenge and you feel rewarded after beating it, but the kind where only pure dumb luck will work, and you just end up feeling angry, defeated, and disgusted.
Even worse, it seems to be broken for me as well. After failing it 5 times, I gave up and just clicked "Advance to the next mission." To my surprise and dismay, it didn't advance to the next mission at all, just stuck me right back in briefing for the same one. So I set the difficullty to very easy and managed to do it, and after it said "downloading new orders" when I got to the node, instead of taking me to the next mission, it just plopped me right back into the briefing for the same damn mission. It's like some sick version of Groundhog Day. Any ideas on what might be causing this, and will I have to start all over again to clear the problem?
Using FSOpen 3.5.5 v. 1.20.04 with the latest version of the launcher, D3D HTL, PCX32 and D3D mip mapping are on, and have always been one without causing any problems, so it's not that. I'd try it again under regular FS2, but I just can't bring myself to play that sadistic mission again unless I was absolutlely sure it would work.
Anyway, I strongly recommend that the mission be re-worked so that A) The Mammon doesn't notice the Custodian anyway even though you neither led it into the Custodian's direction nor got farther than 2kms, B) Don't design it so that the Mammon may or may not just blast you with anti-fighter beams, taking you from full shields and health to dead with nothing you can do about it, ditto on the flak guns. When you have to win a difficult mission by pure dumb luck, that's not a challenge, that's just crap.