Calamity Fragments in Path of Exile 2 escalate endgame challenges at the Burning Monolith, turning standard Arbiter of Ash fights into Uber variants with superior loot. This trio—Primary, Secondary, and Tertiary—requires progressive Atlas boss tree unlocks and Citadel farming to activate portals leading to intensified difficulties. Follow these steps to chain higher tiers without wasting resources.
Step 1: Unlock Boss Tree Points
Begin by allocating Atlas points through boss kills in escalating difficulties. Earn the first two points by slaying a map boss in level 79+ areas (tier 15 waystones) with at least six modifiers. Advance to points 3-4 in level 80+ zones using tier 16 corrupted waystones or irradiated tier 15s via precursor tablets or Atlas corruption.
Progress to points 5-6 with Anomaly map bosses at level 79+, then 7-8 via Citadel bosses. Hit 10 total points—any combination works—to shift Citadel drops from basic Crisis Fragments to the Calamity set, enabling Uber eligibility.
Step 2: Farm the Fragment Set
Target Citadels: Primary from Geonor in Iron Citadel, Secondary from Jamanra in Copper Citadel, Tertiary from Doryani in Stone Citadel. Craft waystones with 200%+ drop chance using Mana Siphoning prefixes, quantity suffixes, and Grand Project tablets for 2-3 fragments per clear. Run irradiated tier 15-16 maps, pathing efficiently to bosses while glitch-skipping delirium on deaths.
Stockpile extras via Currency Exchange post-Act 3 or trades at 1-2 Divines each. Infinite Monolith portals allow retries, with death downgrading Ubers to base fights but preserving fragments.
Step 3: Activate the Portal
Travel to the Burning Monolith near Atlas origin. Insert one each of Primary, Secondary, and Tertiary Calamity Fragments into the door. Confirm 10+ boss tree points for Uber spawning; otherwise, it defaults to standard Arbiter. Enter with capped resistances, frenzy sustain, and mobility for mechanics like ash storms and portal phases.
Step 4: Scale and Repeat
Clear Uber Arbiter for enhanced Crisis upgrades and Prism Diamonds, fueling better waystone crafts. Reinvest in Atlas for quantity nodes, looping back to Citadels for sustained farms. Groups split fragments for volume; SSF scales via solo juicing.