Ad Infinitum II: Upper Bound

Ad Infinitum II: Upper Bound is a Legendary Backpacks collection achievement that requires items from the Fractals of the Mists in combination with some specific tasks, and can be unlocked by Kelvei after Ad Infinitum I: Finite Result. Completion awards the Proof: Upper Bound needed for crafting Upper Bound, the second tier of the precursor to the legendary back item Ad Infinitum.

Achievement

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. Prerequisite: Ad Infinitum I: Finite Result Unlock Item: Theory of the Upper Bound Reward: Proof: Upper Bound Collection	Collected 1 Fractal Tier 2 Components	1
	Collected 5 Fractal Tier 2 Components	2
	Collected 11 Fractal Tier 2 Components	3

Collection items

	Collectible	Type	Subtype	Notes
1	Dredge Spiral Drill	Item	Trophy	Purchased from BUY-2046 PFR in the Mistlock Observatory for 30 .
2	Glob of Molten Fire	Item	Trophy	Purchased from BUY-4373 in the Mistlock Observatory for 200  + 80 .
3	Uncategorized Challenge Mote	Item	Trophy	Activate the challenge mote, and complete the scale 36 Uncategorized Fractal with an 80% reduction to healing.
4	Snowblind Challenge Mote	Item	Trophy	Activate the challenge mote, and complete the scale 27 Snowblind Fractal with an 80% reduction to healing.
5	Thaumanova Reactor Timed Mote	Item	Trophy	Complete the scale 15 Thaumanova Reactor Fractal in under 20 minutes.
6	Molten Alliance Fractal Field Research Paper	Item	Trophy	Sold by the Molten Furnace Field Researcher at the end of the Molten Boss Fractal for 1 .
7	Jade Maw Fang	Item	Trophy	Obtain a Vinewrath Tendril from the Vinewrath Chest after defeating the Mordrem Vinewrath in the Silverwastes and trade with the Frozen Jade Researcher at the end of the Solid Ocean Fractal.
8	Pollenated Ice Elemental Core	Item	Trophy	Obtain an Ice Elemental Core from the Legendary Shaman Lornarr Dragonseeker in the Snowblind Fractal and imbue it with a Luminescent Pollen Cloud during The Breach meta event in the Silverwastes.
9	Beta Fractal Capacitor	Skin	Back item	Create a Beta Fractal Capacitor (Infused) in the Mystic Forge with a Glob of Coagulated Mists Essence, Gift of Ascension, 250 Globs of Ectoplasm, and a Prototype Fractal Capacitor. Automatically unlocked if it or a higher tier is already owned.
10	Weak Magically Charged Infusion Sample	Item	Trophy	Charge a +6 Agony Infusion at the Mist Geyser in the Molten Furnace Fractal.
11	Aetherblade Handbook	Item	Trophy	Sold by the Aetherblade Quartermaster in the Captain Mai Trin Boss Fractal for 2 , salvaged from Finite Result or other ascended gear.

Related achievements

• Legendary Backpacks: Ad Infinitum I: Finite Result — Collect all 11 fractal components. (6)
• Legendary Backpacks: Ad Infinitum III: Unbound — Collect all 11 fractal tier 3 components. (6)
• Legendary Backpacks: Legendary Backpack: Ad Infinitum — Collect all 13 fractal tier 4 components. (6)

Notes

• Salvaging Finite Result will always yield 5 Balls of Dark Energy, 2 of which are needed to buy the Aetherblade Handbook and 2 to craft Upper Bound.
• Get the Ice Elemental Core before starting the Silverwastes meta. This way you only have to do it once. Do not forget to imbue the core during the meta.