Time for me to toss a few gameplay questions around...
So, I'm currently working with a Summoner-based playthrough, and up to Hardmode on a normal world, using Spider armor and minions backed up with the Bloodboil. I've buffed my minions with Hivemind, and have acquired the Liches Reliquary, but it still feels like I'm just not getting the desired capabilities to take down Mecha bosses and do the last jumps to beating Mecha bosses. Mind some of this is tempered by the fact that Skeletron Prime just spawned from nowhere and nuked me...
So the question now is I was curious if any content up to this point in Thorium I may had overlooked may be able to help. Mostly the only thing I can think of right now is either figuring out how to trigger the Borean Strider, or swap to an Expert world and rework my way to beating the Wall of Flesh for another accesory slot to add more stats. Or get lucky and the next bosses that spawn being either Destroyer or The Twins, who I can probably beat easier with Spiders.