Lamentable Rest - Give the Old Device to Ronan for AF100 BRESHA RUINS FRAGMENT - Rhodium Ring (04/06) + 1000CP !
With this deed you now have access to the north room with the control device in Echoes of the Past. Talk to Porter, the man in front of the device for a quest of obtaining two passwords. Don't forget to kick open the super-concealed treasure cube to get the 'Disaster' Gate Seal (enables Time Reversal in AF100 Bresha Ruins). That password thingamajig is spread over two other timelines...
After the happy ending of Final Fantasy XIII, Serah Farron sets out on a search for her sister Lightning who mysteriously disappeared. No one but Serah remembers what happened that day underneath the crystal pillar and many believe Lightning died. Serah is not convinced however, and along with Noel, a mysterious time traveller from the future, she journeys through time and space to find her sister. Along the way, she uncovers dark and sinister truths that could destroy the timeline and set untold chaos in motion. You must join together to stop that from happening!
Traverse the Historia Crux with our guide, which includes the following:
100% walkthrough to Final Fantasy XIII-2.
Accompanied with helpful screenshots and videos.
All side quests & post game content covered in detail.
How to obtain every collectible in the game.
HD videos of key battles and how to beat every boss.
Comprehensive Coliseum battle guide.
The best places to level and farm XP.
A complete Bestiary for every enemy type.
DLC guide for "Sazh's Episode: Heads or Tails?" and "Requiem for a Goddess".