Hey fellow Nephalem! When facing Diablo III bosses, it’s crucial to understand their mechanics. Keep an eye on their telegraphs to dodge attacks effectively. For optimizing gear, prioritize critical hit chance/damage, cooldown reduction, and elemental damage that complements your skills. Don’t forget about legendary/set bonuses for that extra punch! Efficient leveling involves running Rifts and Greater Rifts at the highest difficulty you can handle for better experience and loot. Remember to keep your gear updated every few levels for a smoother progression through the game. Happy demon slaying!