got a sanguine staff in a world with 3 friends. The extra people made the fight decently easy, so the mechs shouldn't be too hard.
I did this alone, on normal mode with Zenith in 7 att. I can't imagine how hard is it to make it in the daytime as Summoner with just post-plantera gear! It is a hard challenge I guess.Ah. I might try to do daytime first lol, just for fun. Terraprisma would also be nice.