Yuni
Fire 
Rocket Launcher 
Defender 
Burst 2 
Missilis Tier 5 DMNS
■ Affects all allies. Activates when entering Full Burst.
Charging speed ▲ 8.97% for 10 sec.
SDS
■ Affects all allies. Cast when attacking during Full Charge.
DEF ▲ 2.77% for 10 sec.
Restores 2.77% of attack damage as HP for 10 sec.
Max Ammunition Capacity ▲ 1 rounds for 5 sec.
BDG
■ Affects enemies within attack range.
[Target] Deals 348.73% of final ATK as damage.
[Target] Immobilizes the target(s) for 5 sec.
Skill recommendations
Solo Raid Usage
This is based on the top 50 players of all NIKKE servers combined. Data is from enikk.app, check their website for a lot more raid data.
SeasonWeakness
5
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Extra notes
By today's standards, a really bad kit that's just underwhelming on most (if not all) PVE content. Invest only if she is your waifu.