Exodus of Stars

Exodus of Stars is a crossover between Mass Effect and BattleTech. Aleksandr Kerensky has led the war weary Star League Defense Force on a two year long journey into exile. A chance decision leads to a long awaited discovery, and final proof that humanity is not alone in the cosmos.

Exodus of the Stars contains the following tropes:

 * Batman Gambit: Used by the Star Covenant. During their invasion of several Batarian worlds a number of rebel groups form to drive away the invaders. Rather than wipe them out, the SC deliberately retreats from them, and eventually leaving the planets altogether...so that those same rebel groups will riot once the Batarian Hegemony tries to force them back under it's brutal caste system
 * Berserk Button: The Star league does not react well to the the fact that Batarians practice slavery. Even Aleksader Kerensky is pissed at this.
 * Big Damn Heroes: Done twice so far. The first time is when a combined Quarian/Human strike team save a Vollus mining outpost from Batarians. The second time is when the Wolf's Dragoons save a turrian outpost from the Blood Pack. Both times involve mechs. Lots and lots of mechs.
 * Cain and Abel:
 * For Want of a Nail: The story practically runs on this trope. Humanity has a peaceful first contact with the Quarians instead of a first contact war with the Turians. Nicolas Kerensky also never creates the Clans in this fic
 * Humongous Mecha: Par the course for a BattleTech story
 * Prolonged Prologue: The story is at ten chapters so far and it's only now looking to kick off the main plot.