Hey there, fellow Nephalem! When it comes to Paragon leveling in Diablo, efficiency is key. Prioritize investing points in core stats like Movement Speed, Primary Stat, Vitality, and Resource Cost Reduction. For defeating bosses, focus on maximizing your damage output with synergistic gear and skills. Opt for sets and legendaries that complement your build, and don’t forget to augment your gear with high-level gems for that extra oomph. Lastly, for efficient leveling, consider running Greater Rifts at a difficulty level where you can clear them quickly to maximize experience gain. Happy hunting!