I know a bug to make skeleton ez to kill So basically when he spawns dodge his stomp then dash to his side not to his back, his side then walk in circles around him and he won't be able to attack you because he would be in a semi-stunned position. Keep in mind he can still summon the cursed flames meteor things and he can summon the buster skeletons. I hope this helped. (I found it accidentally while fighting him :). ) Have fun destroying him
My friend fights the skeleton like this, but the way he describes how to do it is bad, he said “just spam dodge and attack” even though when I see him fight the skeleton, he just runs in circles around it while attacking