Hey fellow Nephalem! When facing bosses in Diablo III, it’s crucial to have a good balance between offense and defense. Make sure to study their attack patterns and dodge their big hits. For optimizing gear, focus on getting items that synergize with your build and always prioritize critical hit chance and damage. Efficient leveling can be achieved by running Rifts or Bounties on higher difficulties with a group for better experience gains. And don’t forget to keep your gear updated every few levels to maintain your power level! Good luck out there in Sanctuary!