Commander Shepard is back on mission tomorrow when the final piece of downloadable content for Mass Effect 2 drops. See for yourself what's in store for BioWare's sci-fi hero in the Arrival launch trailer.The DLC adventure tasks Shepard with rescuing an undercover operative who has evidence of an imminent Reaper invasion of Earth. Prepare yourself for the arrival:Arrival will be available for download on Xbox Live, PlayStation Network, and Windows downloads tomorrow for 560 Microsoft Points or $6.99.This is the type of DLC I'm willing to pay for: additional single-player content that continues the core game's narrative and bridges the gap to the next title in the series. Looking forward to jumping into Arrival tomorrow.