The last treasure you found before unlocking "Treasure Trove"

[FearlessDuchess]

The last treasure i found was a stone fragment in the Altar of the Abyss.

[suko]

I missed the upstaires in mack and cooks house

[Shad0wTroop3r]

treasure hunt in ToE boss area

[Imperial Pie]

Magical Lock Key in the Secret Cave

[FFFreak1129]

The last one for me was one of the treasure hunts. Specifically it was the Scroll of Balance.

[DaturasFire]

I have gone thru with splitinfinity, wikia, and this guide, checking off one at a time at least 8 times... and STILL after 2 years don't have it... WTF!!!

[DaturasFire]

And yes the auction house is closed

[Arwen112]

Just found my last one, it was the tablet fragment in the sorcere's shrine

[Tidus755]

The last 3 ones I found were the following
Mack and Cooke house - the urn behind the table
Tosca Village - One in a house

And last but not least (which I just got a few minutes ago)
White Boa - Guest Area - Healing Potion

1100/1100 after 89:55 hours of gameplay (about 30 of which were just for TT-backtracking and for the DLC, which are supposed to take a lot less)

[Rasphiruchi]

My last one was Search Glasses in the cabinet in the house on Ipsilon Mountains, so happy when that achievement popped

[ItBeNickYo]

I missed three items total. One was a tree in the Ipsilon Mountains and two chests in the Burning Limestone Cave.

Finally done with this game. 104:29 playtime!

[ninjachicken]

My last one was the Lucent Dragon Discus with the ring on a treasure hunt.

[FinSleepless]

An invisible chest at Ipsilon Mountains.

[PoMoGub]

I've no idea how, but I ended up missing an underwater item. Thankfully I checked those after only an hour of checking other locations. That saved me a good deal of frustration. This was definitely one of the few achievements that actually made me yell with joy.

[Mr Rivuz]

I don't remember which item was, but it was in the last chest of the last dungeon. Luckily i got there without missing any one

[The Nerevarine]

I decided I'd try this again having been a few years since I played the game... within a few hours of mindless wandering, I found 3 items in Uhra back streets, and realized I was missing a stone tablet that I then found in Crimson Forest.

I also found treasure in the first tree at Ipsilon and the first set of rocks outside the inn.

Then I found two treasures in Tosca and Numara wardrobes.

Then I ran through the Temple of Enlightenment and did the Enchanted Mask quest, but no new treasures. I followed the video guide for the main areas I could still access, specifically the caves, (and tried to piece together the city walkthroughs), and still no new treasures. I scoured each city a few times over and found no new items.

I triple-checked the sea floor and all the spots mentioned in this thread, and started thinking my game was bugged out or the DLC was messing me up or something.

Then hours later I checked out the Prima guide and found the Power Drink at the entrance of the Burning Cave (and in disbelief went back to the video to confirm I somehow missed it)... still no achievement, though! I then did a 4th run-through of the Forbidden Cave, the Terrace Cave, the Black Cave, Crimson Forest, and the Burning Cave to no avail.

I've been everywhere many times, mashing the A button like a fool. I have all the treasure hunts done, all the seals, all the crystal fragments, 99 seeds, 11 unusable slot seeds, all the spells, all the accessories, nearly all level 99 immortals, and I can visualize each and every treasure marked on the maps in the guide. I have very little hope left that this achievement will pop without starting a new game.

My suggestion to others is to skip this nonsense and start a new game instead. I would be halfway done with a new play-through in the time I've taken trying to take the easy way out.

[The Nerevarine]

Okay, so I played through to disc 4 in "New Game +" mode and along the way I kicked a can in the Backyard... and my first thought was how unfamiliar it was, and how there were three similar cans that gave no treasure... It was near the end of disc 3 so I played through the Burning Caves to get to disc 4 before checking my old save...

..and sure enough, it was the missing treasure.

I can't believe this treasure hasn't been mentioned in this thread.

For the record, it only took me 14 hours to get to disc 4.

[Theas Wings]

I followed the TT-guide as my life depended on it the second time I went for Treasure Trove so it -popped- at the last item, thank god

My proudest cheevo ever and will probably be for a very long time, if not forever

[Dannyb01y]

It was Seed # 38 according to Lost Odyssey wiki, The one in Numara in a bush in Canal Street. I new I was missing one seed but didnt know if it was the last item I needed. - very happy chappy now I can 100% the game. Only had it a few years playin on and off

[Rascalov]

I just got the achievement. The last treasure for me was 2x Wind Seal Leaf from ramming a tree in Ipsilon Mountains - Near Mountain Hut. I went through that whole area several times before I noticed I was missing something. The tree is tucked to the right of the screen near a pot. My total playtime was 96 hours, and I spent about 13 hours searching for the last few items that I needed for Treasure Trove. Definitely one of my proudest Achievements

[Mirrage]

Last one was in Gongoras Mansion in his Office behind the desk. Found it after double checking nearly every other location in the game. Think last Item before that I found about 10 hours of playtime earlier.

Glad to have finished this Achievement, defenitely the most annoying achievement of the game.

[PMD RODNEY]

I missed a Seed in the cave outside Gongora's mansion.

I knew I was missing a Seed as I only had 98 in my inventory which made narrowing it down a relatively painless task. I don't think I was prepared to go through every zone to double check each possible item I missed.

But I have it now and the sense of satisfaction is amazing

[SevenJesterHats]

I searched (well i thought i did :P) everything and everywhere trying to figure out which bit of treasure i forgot to ram, pick up etc... i gave up and started a new game+, i got to crimson forest and i ram a pillar just didnt look familar. As i ram it, it seem unfamilar and i started to wonder if ill even search this part of the forest on my 1st play though. anyways i loaded it back up and BOOM! it was there untouched!!

Originally Posted by PMD RODNEY

But I have it now and the sense of satisfaction is amazing

couldnt agree more!!!

[Backstaged]

just got it - last frickin treasure was a healing herb behind a poster in Uhra - great gate station. Crikey that was a pain! Still, am glad it was the only one I was missing. got the achievement with playtime of 62hrs, only got the last boss and the dlc to go!

[Nogardo]

Oh, the two inside the Pirate Cave. A pain in the ass. I didn't notice I needed to pan the camera.

[Flopsy86]

My last one was the tablet fragment in the Crimson Forest (the one which the Prima guide doesn't mention)

[I Gil Galad I]

My last one was also the tablet fragment in the Crimson Forest. I didn't start using a guide until disc 3 and I missed the boulder in my first visit to Sorcerer's Shrine. Well I did see it but thought, I'll come back for that. Sure enough I did, after I collected every other treasure!

[Pwnedbyspas]

My last one (just got this) was 6 Cape of Illusions under the sea.
(Number #22) on the map someone made on this site.
After back tracking for hours, this was one of the luckiest moments of my life. Big up to the rest of this thread, as pretty much went through it's entirety and it helped me pick up a LOT of items!
Final play time: 69:21.

[Doomsday1974]

Originally Posted by rockhopper

I got my achievement earlier tonight. After thinking I had found my last item underwater (right alongside to the left of the hypercurrent north of Ancient ruins; basically between the two continents) it turned out to be a false alarm as no achievement popped up. Very sad, I decided to follow the guide on this forum along with my prima guide. I started from Uhra and didn't have to go very far, thank God.

I found my last item in Ipsilon Mountains. It was just before the mountain hut. It was 2x whetstones in a rammable tree. The tree is to the left just after you ram two other trees as well as two pots right next to it. My only explanation for why I could have missed it is that my eyes just missed it in the guide after already collecting the four other items right there next to each other. I think I might have assumed that was the tree I had already rammed to the left before I examined the pots.

It just goes to show, that even if you're super careful and confident you got everything, that you could sometimes miss something easily in plain sight and then wonder how the hell you could have missed something so easy.

After finding one I missed in the ocean, I decided to go back to Ipsilon Mountains after reading several people having found missed items here and guess what I missed the same tree! Thanks

[HellspawnRei]

I got my last achievement underwater too.