Vesti
Water 
Rocket Launcher 
Attacker 
Burst 3 
Elysion Tier 5 Dreams Do Come True
■ Activates when hitting a target with Full Charge. Affects self.
Explosion Range ▲ 15.01% for 10 sec.
Survival Instinct
■ Activates when using Burst Skill. Affects self.
Survival Instinct 1: ATK ▲ 5.35% for 45 sec.
■ Activates when using Burst Skill during Survival Instinct 1. Affects self.
Survival Instinct 2: Critical Damage ▲ 22.34% for 45 sec. Previous effects trigger repeatedly.
■ Activates when using Burst Skill during Survival Instinct 2. Affects self.
Survival Instinct 3: Critical Rate ▲ 15.51% for 45 sec. Previous effects trigger repeatedly.
Justifiable Defense
■ Affects self.
Takes out two Missile Containers, dealing 15.56% of final ATK as damage to the enemy with the lowest HP every 1 sec for 18 sec.
■ Affects all enemies.
Effect changes according to the Survival Instinct's phase. Previous effects trigger repeatedly:
Survival Instinct 1: Deals 210.62% of final ATK as damage.
Survival Instinct 2: Deals 247.25% of final ATK as damage.
Survival Instinct 3: Deals 302.19% of final ATK as damage.
■ Affects all allies.
Full Burst Time ▼ 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.
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.