felis
Terrarian
Actually, I think it doen't need any powerful gear(I used Fetid Baghnakhs, Uzi and Bettle shell armor for example), just stay at the edge of the pillar that can spawn mobs, take down as many as you can, escape when in low health, and then coming back...
When there is no orange light coming out from dead mobs, you can go to the pillar, using Nimbus Rod, and summoning to could on a pillar and run. (then come bake and do so again until it breaks).
Also, the vortex pillar seems the easiest one, since no mob can pass tiles, stay in a box and using one tile-piercing weapon could help(like Death Sickle, Daedalus Stormbow).
And the Phantasm with Holy Arrows was really powerful.
When there is no orange light coming out from dead mobs, you can go to the pillar, using Nimbus Rod, and summoning to could on a pillar and run. (then come bake and do so again until it breaks).
Also, the vortex pillar seems the easiest one, since no mob can pass tiles, stay in a box and using one tile-piercing weapon could help(like Death Sickle, Daedalus Stormbow).
And the Phantasm with Holy Arrows was really powerful.