Looking for a save file at the start of Act 3 (with Luminator)

Official The Alters subreddit. Story follows the adventures of Jan Dolski, who volunteers for a high-risk mission to find and extract a rare element called Rapidium. But the mission goes wrong, leaving Jan the sole survivor. Stranded on a hostile alien world, he's forced to use Rapidium to create alternative versions of himself—the Alters—to survive and ultimately find his way home.