Biggest thing you missed during first playthrough?

[Twisty]

I'm hoping at least some of you went in completely blind to ER, and with that comes things you missed.
For me it was the Haligtree. The entire area. Yeah....
Dragonlord Platypus
And the Three Fingers

[Sparhawk 59]

a lot of questlines

[Heimdall313]

I have 500 hours and still haven't entered the Haligtree.
First playthrough, couldn't get to volcano manor at all, never found Seethewater, and missed the ladder up the cliff from the Altus Plateau bridge. Second playthrough, I figured it out, but incredibly did not notice the serpent hunter in the room and got absolutely smacked for hours.
I also made the bold assumption my Brass Shield would withstand literally anything past the Grand Lift of Dectus. Needless to say I was impaled and reduced to ash by every Lyndell Knight I saw.
Everything in Caelid

[Dark Angel]

I missed the Three Fingers /Frencied Flame / Hyetta quest ( didn't find the hidden wall behind Mohg the Omen).
Never saw Dragonlord Placidusax and also not the Lichdragon Fortifax.
Found Millicent only at her first location and gave her the needle, then I thought her quest was finished.
Completted Ranni's quest on my own.
Missed some items in Leyndell Capital, because I was surprised when it turned to Ash.
Missed the Gold Mask quest.

[Majrick]

Dark Souls 3, the servers were down to promote sales of ER. how-ever I did complete ER but no NG's for me.

[FIRE]

Missed the entire area behind the hidden wall in vulcano manor and most of the npc quests except for ranni and fia

I didn't go in 100% blind, I looked up a small part of both ranni and fia's quests but everything else I did blind. Fia's quest I basically completed entirely I just didn't know I had to keep resetting her area and talk to her to finish it.

[Twisty]

Originally posted by Ymir:

Fia's quest I basically completed entirely I just didn't know I had to keep resetting her area and talk to her to finish it.

Dude, same! I didn't know I had to refresh and I'm like "is that it?"

[nicolaselliot8]

In my first playthrough I didn't find the other part of the Haligtree secret medallion so I missed the whole Consecrated Snowfield zone.

[PK_Thunder]

Vagram's armor. I emptied out Volcano Manor about forty minutes after I found it.

[königplatzen]

Originally posted by nicolaselliot8:

In my first playthrough I didn't find the other part of the Haligtree secret medallion so I missed the whole Consecrated Snowfield zone.

Similar. I had the second half, but missed the entry. I expected it somewhere else.
An then, I was fighting radagon/beast and thought, where the heck is Malenia.

Originally posted by Dark Angel:

I missed the Three Fingers /Frencied Flame / Hyetta quest ( didn't find the hidden wall behind Mohg the Omen).
...
Missed the Gold Mask quest.

same. I did find the hidden wall behind mogh, but I missed hyetta quest completely, I never got to the first grace in liurnia again, after beating godrick, because I circled stormveil before entering it.

The golden mask quest was weird, he disappeared at some point, without an idea. I guess, I have to look it up.

[Cooperal]

I missed the opportunity to unlock boiled crab and boiled prawn from Boggart. His shack was not featured on the map in early patches and I completely forgot about Rya's request at Liunia until I met her again at Volcano Manor. This was before the patch which added markers for previously found NPCs.

Easy access to that damage negation could have come in very handy as summons/coop/shield are all defensive substitutes that I lacked as part of my first playthrough rules, and would have had no problem stocking up on surplus by the end thanks to a 150 level cap.

[SpottedHare]

I was actually surprised to learn later on down the line that the reveal about marika and radagon was a big twist. it went completely over my head that something big and epic had just been relieved to me, because like watching the final of a tv show i never watch a second of before their was no context what so ever.

[Twisty]

Originally posted by SpottedHare:

I was actually surprised to learn later on down the line that the reveal about marika and radagon was a big twist. it went completely over my head that something big and epic had just been relieved to me, because like watching the final of a tv show i never watch a second of before their was no context what so ever.

I feel that. I rarely follow story in video games unless I'm super interested in it. So when i beat the star manatee I was just like "cool, game done"

[Jad The Taff]

volcano manor
Haligtree
Mohgwyn Palace

[RedCoin]

claymore

[Koala 4peace]

The volcano manor Lady's quest, several weapons and armor, a lot of those things to buy smithing stones, dung eater quest (not missed, just not in the mood to do it), the teeth of my character after every encounter with the crucible gigachads...