NIKKE Anomaly Interception Guide: 5 Fixed Bosses, Element Weakness & Reward Breakpoints
5 fixed bosses, each one's elemental weakness, and stage reward breakpoints
Anomaly Interception has 5 bosses, all available at the same time (unlike regular bosses that rotate by day of the week):
- Kraken — Iron element, hits hardest against Electric-element Nikkes.
- Ultra — Electric element, hits hardest against Water-element Nikkes.
- Harvester — Fire element, hits hardest against Wind-element Nikkes.
- Indivilia — Wind element, hits hardest against Iron-element Nikkes.
- Mirror Container — the 5th boss, drops Arm-slot gear plus Custom Modules; its specific elemental weakness could NOT be confirmed from the public sources checked — worth verifying in-game before this number goes into the final article.
The higher the stage, the bigger the damage penalty for bringing the wrong element. One concrete example recorded: Kraken (Iron) deals 300%–500% extra damage to Electric-element Nikkes depending on the stage. That's why the very first step when building a squad for Anomaly Interception is eliminating any Nikke with the weak element entirely, before even thinking about DPS optimization.
On power scaling: a Nikke with Synchro Level above 400 gets CAPPED at the equivalent of level 400 (no extra benefit), while a Nikke below 400 gets no compensating buff — in other words, the maximum effective performance in this mode tops out at a Synchro-400 Nikke.
Sources vary slightly on the exact breakpoints but agree on the practical conclusion: there are reward-rate breakpoints around stage 1, 3, and 6 (each raising rewards by at least 10% over the previous one), and out of 9 total stages, the rewards from stage 7 through 9 are IDENTICAL. Practical takeaway: there's no need to push past stage 7 — rewards stop increasing after that, so it's more efficient to spend remaining attempts on a different boss instead.
Guides generally describe Anomaly Interception's difficulty as on par with Solo Raid — meaning it needs a genuinely invested squad (maxed skills, good gear/cubes), not something you casually auto-battle through like standard Campaign stages. That's part of why this mode unlocks relatively late (after Stage 22-36) compared to modes like Lost Sector or Tribe Tower.