Resident Evil: Requiem already had plenty of meat on the bone, between a decently sized campaign and plenty of post-game goodies to chew on. Now, a couple of months after launch, it's gotten some pretty fun-sounding free DLC. Capcom released a surprise update this week that included an action-packed new mode called Leon Must Die Forever . Unlocked after you finish the main story, Leon Must Die Forever is a gauntlet of high-octane action challenges starring everyone's favorite former rookie cop, Leon S. Kennedy. Capcom's official description makes it sound pretty straightforward: kill more difficult-than-usual enemies within a time limit, fight bosses, unlock enhancements, and try not to die, despite the mode's name. Mashable Top Stories "Fight your way through areas you’ve visited previously throughout the game and defeat the final boss, all with stronger enemy variants, five increasingly difficulty ranks, and a race against the clock!…