Equip the best armor and weapons you have
Bring healing items, especially top-tier healing
Use the best food and healing resources before the fight
Learn his attack patterns and dodge carefully
Focus on surviving early phases and conserving healing
Use the ACT options that reduce danger when available
Attack consistently when safe
Save powerful items for the hardest attack phases
Watch for projectile patterns and move in short, controlled steps
Stay near safe spaces when the arena allows it
Heal immediately after taking heavy damage
Keep your HP above critical range at all times
Use defensive gear if you are struggling to dodge
Practice the fight to memorize the most dangerous attacks
If playing the genocide route, use stronger offense and precise dodging
If playing the pacifist route, prioritize survival and timing over damage
Be patient and avoid panic movement
Keep your cursor or movement focused on the center of the arena when possible
Use any special mechanics the fight gives you to your advantage
Restart only after learning what caused the loss and adjusting your strategy