This is the campaign's easier version, designed with FreeSpace Open 3.6.11 and its game balance issues in mind. I still don't wholeheartedly recommend...
Renegade Resurgence is a mod for FreeSpace 2 that is played some years after the Capella incident. The player is a rookie pilot for the GTVA (Galactic Terran-Vasudan Alliance), and immediately finds himself at the core of events. Soon, the GTVA will realize that what they thought as a pirate organization is actually something more menacing. The stability and existence of the galaxy-spanning alliance is once again imperiled by a group of renegade Terrans and Vasudans who go against their own species with the intent to destroy the GTVA and replace its government with their own.
RR focuses on gameplay and thorough mission design. Restoring the feeling of the original FreeSpace 2 campaign is the main focus of RR, with more emphasis on actual combat. The mod includes several new weapons, each having its unique use.
Storywise, Renegade Resurgence is like a war novel. You are a recruit pilot who joins the faltering GTVA. Know what it means to escape from an enemy, defend, attack, rescue, and spy. For a less intense, more story-driven campaign by the same author, see Into the Halls of Valhalla. If you like military campaigns, take a look at the Luyten Civil War, a shorter, but higher-quality mod.