In case this week hasn't stressed you out enough, Greenland 2: Migration has arrived to kick your cortisol levels into overdrive. Incredibly, this sequel to Greenland imagines an even worse-case scenario to the first film's premise. Sure, the 2020 disaster movie featured a massive comet called Clarke that was barreling toward the Earth so fast and furious it was sure to destroy most of the world's population and life as we know it. But what if, five years later, the survivors have a new series of Herculean obstacles to face before they can find any kind of peace?  Greenland 2: Migration throws earthquakes, tsunamis, and radiation storms with vicious lightning at the Garrity family — and that's all in the first 20 minutes. From there, the story takes them on a dangerous trek to find a "promised land" where they can live happily ever after.…