Ad Infinitum II: Upper Bound
From Guild Wars 2 Wiki
Ad Infinitum II: Upper Bound is a Legendary Backpacks achievement that requires items from the Fractals of the Mists in combination with some specific tasks. This collection is the second step to obtain the second tier of the precursor, Upper Bound.
Achievement[edit]
Ad Infinitum II: Upper Bound  Legendary Backpacks  6 

Collect all 11 fractal tier 2 components.Unlock all 11 fractal tier 2 components to work towards building the legendary fractal backpack.

Collected 1 Fractal Components  1 
Collected 5 Fractal Components  2  
Collected 11 Fractal Components  3 
Collection items[edit]
Notes[edit]
 Salvaging Finite Result will always yield 5 balls of Dark energy, 2 of which are needed to buy the Aetherblade Handbook and craft Upper Bound.
 ^{[1]} Takes a minimum of 6 days to complete, as you can only earn a maximum of 5 Fractal Research Pages per day from the Daily Recommended fractals and the Challenge Mote of the Nightmare Fractal and Shattered Observatory Fractal each day, each awarding a Fractal Research Page.
 ^{[2]} Doesn't need to be built again if you have already built it. Higher tiers will automatically unlock the collection.