While that may sound pretty interesting, the game is quite clumsy with delivering the key elements, and relies too heavily on players already knowing what happened in the original game. Seeing as how he can't erase his feelings for Juno, Starkiller stuns Vader, escapes Kamino, and starts searching for Juno and for his own identity.
The game starts with Starkiller (or perhaps one of his clones) being awoken by Vader and tasked with overcoming his broken memories about his love, Juno Eclipse, and former friends, like Jedi General Kota. The Force Unleashed 2 cleverly side steps the canon ending which shows Starkiller becoming a martyr, and reveals that Vader had used the cloning facility on Kamino to create clones of the Jedi warrior. The first game, even if it had a few faults, shined because of Starkiller's interesting story, and how he slowly backed away from Vader, and gave the Rebellion a new chance before the start of the Fourth Episode.
While previous Star Wars games were pretty content with just rehashing stories from the movies or from the separate TV series, The Force Unleashed carved out its own niche between Episodes Three and Four by showcasing Darth Vader's secret apprentice, Starkiller.