@Quba
Looks like it turned into mostly a boss rush at the end? I think it was pretty similar on my playthrough too, I wonder why is it so, what we tend to tackle a large part of hardmode as a boss rush, instead of taking it slow?
I kinda think it might does something with that most builds are done in pre-hardmode, as well as most explorations. there's still a lot to farm early hardmode, gearing up and getting some other things too, maybe, that can take a while, such as the ankh shield. and, like that, most of those stuff are done pre-mech bosses. there's still the quest for life fruits after, but after that is done, there's really not much else to do...? Besides fighting bosses and such.
I mean, certainly could do other stuff, but most relevant treasures are found, so no much more point in mining or farming for stuff (the exception is the post-plantera dungeon), and most builds are already done too. This is somewhat on the line what I noted on with the spider furniture set in the other (start in hardmode) playthrough, that I never really used it much before, because it's hardmode, and most houses are basically done by that time. although this is not always the case, since I did used crystal furnitures in some other playthrough, but still happens in several playthroughs, that the hardmode furniture sets won't be used much. Which is kinda sad... XD
Back on the playthrough, indeed, Moon lord is horrible. Prior to 1.4, I rarely had trouble fighting him, but now his deathray passes through blocks, and autopause won't work while talking an NPC (only when buying stuff, which doesn't applies in the case of the nurse) suddenly turning Moon Lord very tough. I mean, he is the final boss, but it still takes several attempts even on normal, and it's just crazy on expert... and doing the lunar events again and again would be no fun either. understandable you cheated in some summon items to rematch him. too bad you didn't win...
As for the conclusion, it's very interesting.
You often see people saying "crimson is harder than corruption" but it appears so, that that's not the case. That saying maybe comes from that eater of souls aren't that very tough with proper gear, and that devourers are otherwise very rare. on the usual playthrough. but you certainly will see them sometimes if you live in the corruption. and a barricaded door won't stop them, unlike it does with the crimson's walking creatures.
This is verys interesting too, because on the usual playthrough, devourers are quite uncommon, you sometimes would even forget they exist...? (well, I usually play crimson maps though, so what do I know XD) but it appears so, that they're something like the unsung heroes of the corruption's monster arsenal, boasting with quite the power.
Generally, I think (whether it's a corrupted or crimsoned world) this is a very interesting, and quite fun challange, as long as you have some good plans, and don't give up. It really turns the start of the game upside down with most common resources we take as granted are very hard to aquire at first. such as gel, torches, the furnace, etc. and it all needs a good understanding of the things in the game, from how to acquire these, to how to build suitable houses on a completely corrupted map - that is, aim for the sky!
you also realised some things I din't before, like that gem trees are an interesting alternative way of getting pure stone.
So, yeah, I agree that the start of the game is the most interesting part of the challange, because you have to figure out how to survive there. I do think I enjoyed the whole playthrough too though, including fishing (why you say you didn't like that, if you say you like fishing? though I agree it can be tedious...) but the most fun part was probably mid pre-hardmode with the crimson armor, katana and ruby staff, in Flann's case.
Altogether, a very interesting, fun, and memorable challange, that can change our view a bit on the usual game progression, on material we tend to take as granted, and overall help us learn more about these biomes we might not hate, but generally don't know as much, as other biomes where we usually set up our bases normally.
you would think living in the evil biomes will be a huge pain, but it turns out, they're actually really fun, and aren't that horrible we thought prior (once you get decent gear...) - and that it's not just about survival, but that we can prosper even on these unusual places with some effort.
Really interesting and fun playthroughs. Thank you for telling about your adventures on the corrupted side of the challange. It was very interesting and fun to read about it!