Hey fellow Diablo player! When facing bosses in the campaign, it’s crucial to understand their mechanics. Make sure to dodge their big attacks and focus on dealing damage during their vulnerable moments. As for gear, prioritize stats that complement your build and don’t forget to socket gems for extra bonuses. When leveling, consider running rifts or bounties for efficient XP farming. And always be on the lookout for gear upgrades to keep your character strong throughout the campaign! Good luck out there!