Just load each of the saves. The achievement will pop upon loading. I made these saves using TEdit and then inserting them into an Xbox world save. It seems that only the host will get the achievements. The achievements will not unlock for other people in your game. http://www.mediafire.com/?upncntjbz2fd030#!
This is the second Terraria file I've got from you and have yet to test them. If it works, Thanks so much!
Thank you both saves did work fine, one thing for those that download it when I loaded on the corruption the first time the achievement didn't pop so i deleted it and tried and again worked second time.
Confirmed working for both of them, thank you! You need to uninstall the latest Terraria update because these saves don't work with the March '14 update or later. Beware, if you delete your game update and then run the game, it will REMOVE your current character and map saves after you select which device to load from because the older game considers those newer saves invalid. Be super careful that you don't lose your worlds and always keep backups on USB. Thanks again!