Hey fellow Nephalem! When it comes to defeating bosses in Diablo III, it’s all about knowing their mechanics. Make sure to dodge their deadly attacks and keep an eye on their vulnerable moments to unleash your most powerful skills. As for optimizing gear, focus on stats that complement your build. Don’t forget to socket the right gems for that extra boost. When it comes to leveling efficiently, consider running Rifts or Bounties in Adventure Mode for quick XP gains. And always be on the lookout for gear upgrades to keep your power level rising! Good luck out there in Sanctuary!