http://avalauncho.blog.jeuxvideo.com/r34075/LISTE-COMPLETE-DES-OBJETS-LOCALISATIONS/
Il me semble qu'ils sont indiqués sur ce guide, sinon voilà en anglais :
170 - Super Metal Bangle - Sold in Baroy Town Gate Room - Robot 88
WARNING : You must buy this before you exit the Ancient Factory and enter the Wire Highlands for the first time or you will not be able to unlock this achievement during your current play through
205 - Super Metal Ring - Sold in Baroy Town Gate Room - Robot 88
WARNING : You must buy this before you exit the Ancient Factory and enter the Wire Highlands for the first time or you will not be able to unlock this achievement during your current play through
215 - Nene's Ring -WARNING: You must steal this from Mecha General Szabo - Final Form before you defeat him or you will not be able to unlock this achievement during your current play through
275 - Nene's Earring - WARNING: You must steal this from the Phantom Dragon before you defeat it or you will not be able to unlock this achievement during your current play through. Use the command to steal, because physical attacks will heal this dragon
281 - Shield Earring - WARNING: You must talk to the Jibral Soldiers in Cafe Jibral before you leave Jibral for the first time once you reach disc two to receive this Otherwise you will not be able to unlock this achievement during your current play through
327 - Stylish Vase - WARNING: You must talk to Lokurobeh in the Vase Workshop in Jibral Castle early on disc two possibly before heading to the Laser Zone to receive this or you will not be able to unlock this achievement during your current play through
328 - Special Service Ticket - WARNING: You must receive this during the feast at the end of disc one by talking to the Master or a certain Jibral Soldier or you will not be able to unlock this achievement
