1. Bow and arrow: It can attack from a long distance, go around the back and output, causing great damage to it.

2. Sketch sword: It has the characteristics of fast attack speed and low consumption, and is suitable for melee output.

3. pike: it has strong penetration ability and can be output after approaching the enemy.

4. Big sword: It has a wide range of attacks and a high outbreak, which is very effective for enemies with thick blood.

5. Hammer: It has a high-explosive hard straight effect, which can cause a lot of damage and make the enemy enter a hard straight state.

In addition to the above, there are many other types of weapons that can also be used to deal with the red-violet serpent, but the above weapons are more suitable. It is suggested to choose appropriate weapons against the red-violet serpent according to the actual situation.