Did you try using potions?
Terraria Community Forums
UltiDaniel
Xylia
Try different weapons and playstyles. Try the beetle shell armor and the eye of cthulhu if you haven't already. Are you using the UFO mount?
Tord21
@UltiDaniel Haven't used potions, guess I should
@Xylia I've got a unicorn mount, I'll try the different play styles and weapons
@Xylia I've got a unicorn mount, I'll try the different play styles and weapons