Hey fellow Diablo player! When facing bosses in the campaign, it’s crucial to have a well-rounded build that focuses on both offense and defense. Make sure to stock up on potions and identify the boss’s weaknesses to exploit them effectively. For optimizing gear, prioritize items that enhance your primary stats and synergize with your build. Don’t forget to socket your gear with appropriate gems for added bonuses.

When it comes to efficient leveling, focus on completing side quests for extra experience points and gear rewards. Additionally, consider running through higher difficulty levels for increased XP gains. Remember to constantly upgrade your skills and adjust your playstyle based on the enemies you encounter. Happy hunting in Sanctuary!