Talk:Eye of Cthulhu/@comment-24033617-20131018202321/@comment-24013733-20131019021513

Make a nice big arena out of stone, fill it with rows of wooden platforms. Get piercing arrows or bullets (if you can, Meteor Shot is really effective). If you can afford it by this point, the Minishark is exceedingly efficient with the EoW.

Such an arena gives you sufficient mobility to spread damage all over its body &mdash; you want to avoid it splitting up as much as possible to avoid having to dodge six different Eaters at once.

Once you've got a fair spread of damage over its body, aim directly for its head. If you manage to destroy its head whilst it's passing you, it will stop and begin to "dig" along the rows of platforms. Use piercing ammunition (or the Minishark if you have it) to destroy it, and just aim for its head constantly. You should be able to destroy at least a third of it in one go.