What equipment should I have to kill the Eye of Cthulhu?

Solution 1:

There are no "requirements" as when you are ready. You can just be well prepared.

Things to know about the Eye of Cthulhu:

• Can only be fought at night, that means spawn him as soon as it's ~7:30 ingame.
• Nighttime lasts about 9 minutes.
• Cthulhu First Form does 15 damage and has 1400 life.
• Cthulhu Second Form does 23 damage and has 1400 life.

More info: http://terraria.gamepedia.com.

Solution 2:

I find that the armor does not matter much, as long as you have at least iron armor.

The best weapon to fight it in my opinion is flaming arrows. When I fought it, it was using a gold bow with flaming arrows. The gold bow set up for high initial damage, and the flames damaged it over time, making its health go down more quickly.

Solution 3:

If you're in a world with Crimson, some of the Crimson Hearts drop Crimson Rods. This is a very easy way to farm the Eye, just place the reaincloud above your head and keep dodging in the vicinity of the raincloud.

Don't try to go for it with meelee weapons. Shurikens work great here, or a minishark if you have the cash. And keep dodging if you have low level gear.

The Eye will only stay around at nighttime.

I currently farm the Eye by just staying put with a crimson cloud above me, and whacking it with a Vilethorn. You can get around 7 a night with that.