What is the best weapon for fighting the Betsy in Terraria?

Fighting Betsy in Terraria, the final boss of the Old One's Army event in Tier 3, requires careful preparation and the right weapon choice. Betsy is a powerful dragon-like boss with high health and devastating attacks, making her one of the toughest enemies in the game. To defeat her, you need to understand her mechanics, choose the best weapon for your class, and prepare thoroughly.

Betsy has several attacks, including a fireball barrage, a charge attack, and a flamethrower breath. She also summons Dark Mages and Flying Dragons to assist her, adding to the chaos. Her attacks deal significant damage, so mobility and positioning are key to avoiding her attacks. The fight takes place during the Old One's Army event, so you must also defend the Eternia Crystal from waves of enemies while focusing on Betsy.

For weapon choice, the best weapon depends on your class. For melee players, the Terra Blade or the Influx Waver are excellent options. The Terra Blade fires a projectile that deals high damage, while the Influx Waver's projectiles home in on enemies, making it easier to hit Betsy. For ranged players, the Tsunami or the Phantasm are top choices. The Tsunami fires multiple arrows at once, and the Phantasm rapidly fires arrows that split into smaller projectiles, dealing massive damage. Magic users should consider the Razorblade Typhoon or the Laser Machinegun. The Razorblade Typhoon fires homing projectiles, and the Laser Machinegun has a high fire rate, making it effective against Betsy's large health pool. Summoners can use the Stardust Dragon Staff or the Xeno Staff. The Stardust Dragon Staff summons a dragon that grows longer and deals more damage as it attacks, while the Xeno Staff summons UFOs that fire lasers at enemies.

To prepare for the fight, ensure you have the best armor for your class. Melee players should use Beetle Armor for its high defense and damage bonuses. Ranged players should use Shroomite Armor, which increases ranged damage and provides stealth bonuses. Magic users should wear Spectre Armor for its healing and damage bonuses, while summoners should use Stardust Armor for its powerful minion buffs. Accessories like the Celestial Shell, Ankh Shield, and Wings are essential for mobility and survivability. Use buff potions such as Ironskin, Endurance, and Lifeforce to increase your defense and health. Additionally, place heart lanterns, campfires, and honey pools near your arena to boost health regeneration.

Building an effective arena is crucial. Create a long platform with multiple layers to allow for vertical movement. Place traps like spiky ball traps and flame traps to deal with the waves of enemies. Use heart statues wired to timers to provide additional healing during the fight. Ensure you have plenty of space to dodge Betsy's attacks and avoid getting cornered.

During the fight, focus on Betsy while keeping an eye on the Eternia Crystal. Use your weapon's projectiles to deal damage from a distance, and avoid her flamethrower breath by staying above or below her. When she charges, move to the side quickly to avoid taking damage. Use your mobility accessories to stay out of her range and reposition yourself as needed. Clear the summoned enemies quickly to prevent them from overwhelming you.

Common mistakes include neglecting the Eternia Crystal, standing too close to Betsy, and not managing the waves of enemies. Always prioritize the Crystal's safety, as losing it ends the event. Stay mobile and avoid her attacks by keeping your distance. Use area-of-effect weapons or summons to deal with the waves of enemies efficiently.

Advanced techniques include using the Rod of Discord to teleport out of danger and timing your attacks to maximize damage. For example, use the Phantasm's rapid-fire ability when Betsy is stationary to deal massive damage. Optimize your accessory loadout by reforging them to provide the best bonuses for your class.

In summary, defeating Betsy requires the right weapon, armor, and accessories for your class, along with a well-prepared arena and careful strategy. Focus on mobility, prioritize the Eternia Crystal, and use buffs to enhance your combat effectiveness. With proper preparation and execution, you can overcome Betsy and complete the Old One's Army event.