This is a fascinating campaign. Not many people can tell stories just by moving icons around on the briefing screen. Even better, it's funny how often I misinterpret them, and end up doing something completely different in the mission.
I like the difficulty of the missions. It requires a bit of attention to detail, acclimation to a completely new weapon set, and good use of tactics like targeting engine & weapon subsystems on capital ships. Given the FS1 era of technology, hitting the weapon subsystem on a ship absolutely cripples their ability to return fire. A few of those Shivan weapons do fantastic damage to subsystems.
The regeneration mechanic is unique too, it's nice being able to press 1 during downtime and re-armor myself.
One thing confuses me though: The unintelligible Shivan code. Why? It seems like it should be exactly the other way around, with Shivan stuff being easily readable, but human transmissions being completely alien gibberish. I have not finished the campaign, so...
...is the player supposed to be a human who defected to the Shivans, and doesn't understand their language?