zimberzimber
Terrarian
The most important would be the starting tools, but the one I can't live without is a grappling hook.
You could use bombs...
Close call between the starting tools and the pwnhammer. In theory you can get the merchant with just a Copper Shortsword, from whom you can then buy the Copper Pickaxe, so the Pwnhammer it is. Progressing in early hardmode is a serious pain without it, as you'll have to grind spiders and defeat mechs that way.
Without my trusty Frostspark Boots and Wings of any sort, I would be completely and utterly helpless. Honestly, I don't know what goes through the heads of people that load themselves up on emblems and leave home without these two. Terraria is being free, and being free is Frostspark Boots and Wings.
Many items are important in this game. Though in the beginning, getting even an Iron/Lead pickaxe is important for getting something better than the starting Copper Pickaxe so that mining doesn't take dinosaur era periods of time.
Copper Pickaxe is 35% strength, Iron is 40% Strength.
The weakest block in the game, Dirt (and others like it) have 50 health. That means that both pickaxes will take 2 hits to mine a (grassless) dirt block. You don't get anything better until Tungsten (not Silver!) or Gold/Platinum. There's a mining speed difference, but it is very minor (15 vs 13).
The main advantage of any pickaxe over the Copper, is the fact Copper has Range -1... but then you could simply make a Cactus Pickaxe and save yourself some iron and get pretty much the same result.
I didn't think about the anvils, you're right! Man, someone should do a no-pwnhammer run one day... Someone who can handle the frustration of opening dozends of crates which all include nothing of relevance, I mean.Uh, even if you did kill the mechs with spider armor, you'd be unable to build anything with the mech drops, because you need an oricalchum or mythril anvil, which you can only get by spawning the respective ore.
I suppose you could, however, get it from fishing crates.
But then, why bother with the spider armor if you can get all the hardmode ore from crates?
That's just like saying any sword, or axe.. cxAny pickaxe