I played the first four missions. I am now in the mission where you have to play custom patrol, scanning cargo.
As far as I have got, I am not impressed. I have no doubt the story will be interesting and the dialogue will be top-notch, but you did not test the missions so well. Examples in spoiler.
Mission 1: You made it way too long. I had a Derelict feeling after flying the exact same mission for 17 minutes and I still have a good chance of losing the mission. The battle area is too large for a Hercules II, it was a pain in the back to play that mission, my weapons are all useless but the Harpoons, the first wave of Lokis almost killed me because my wingmen were 7,000 metres away. I had to keep firing with my Subachs and Prom Rs and Hornets. Would it have been any difficult to give the player some better weaponry and a more useful craft?
Mission 2: First, the Faustus jumped out and I was ordered to depart. Then my machine crashed. It has nothing to do with your campaign but has importance. The next time I ran the mission I knew it will end in two minutes, so I was curious about something: I could easily destroy the Faustus and nothing happened! The pilot and the 'dead vessel' continoued their chat. I also tried to destroy any of my wingmen, but you were clever enough to make them invulnerable.
Mission 3: I have only completed this mission once, I did not try to break it anyhow.
Mission 4: What I have already seen from Sync and the first missions in this campaign, I was absolutely sure that nothing would happen if I destroy any of the cargo before or after scanning. I was right. The Triton came in, I destroyed its cargo, the Triton stopped and nothing else happened after that.
I am sure bugs like these are present in every mission, so I won't tire you with those. You definitely need some testing lessons. From what I have seen in the first four missions, this is work is rushed.