NIKKE Solo Raid Guide: 5 Solo Battles, 3 Attempts a Day & a Battery Source
Solo battles, up to 5 fights per attempt, 3 attempts a day, plus a random battery drop
Updated: 2026-08-02
How it differs from Union Raid
Solo Raid follows the same basic mold as Union Raid (fight a boss, chip away at its HP), but does NOT require being in a Union — every battle is entirely your own, with no shared boss HP pool with anyone else. It's a good fit for players not yet in a Union, or anyone who wants an extra reward/Battery source independent of group activity.
1 attempt = up to 5 battles, no repeated Nikke
One Solo Raid attempt consists of UP TO 5 consecutive battles against the same boss; damage from each battle accumulates against that boss's starting HP. Since the rules forbid reusing the same Nikke across different battles within one attempt, you effectively need enough distinct Nikkes to field 5 full squads (5 squads × 5 Nikkes, no character repeated between squads) — this is why Solo Raid demands a noticeably wider roster than regular Campaign content.
3 attempts a day — a different reset rhythm than Union Raid
Solo Raid resets DAILY with 3 attempts per day, unlike Union Raid which resets WEEKLY with 3 attempts per week. Starting an attempt consumes one of that day's 3 attempts and opens a new challenge run (up to 5 battles) against the currently available boss.
Battery drops — the bridge to Harmony Cube
Clearing the boss in Solo Raid drops Batteries — the item used to level up Harmony Cubes (see the Lost Sector article for how Batteries are used). The amount received depends on the boss level defeated, is randomized, and caps at 6 Batteries a day through this channel. If you need more, Batteries can also be bought at the Union Shop at a rate of 200 Union Chips per Battery.
Normal vs Challenge Mode — two separate sub-modes
Solo Raid is split into two sub-modes: Normal and Challenge. Challenge Mode only unlocks after you clear the final stage of Normal Mode. The two sub-modes track attempts SEPARATELY — clearing Challenge doesn't consume Normal's attempts and vice versa, so you can keep sweeping Normal for Batteries while grinding Challenge. In Challenge Mode, every participating Nikke's stats are synced to a fixed level cap for the duration of the fight, narrowing the power gap between accounts. Both sub-modes score you by total damage dealt in one attempt (across all 5 squads), and that score is placed on a daily Ranking leaderboard; the higher your percentile bracket on Ranking, the better the reward, including exclusive Raid Frame cosmetics on top of the usual gem/Battery drops.