Vesti: Tactical Upgrade
Fire 
Rocket Launcher 
Attacker 
Burst 3 
Elysion Tier 1 Missile Guide
■ Activates when performing Full Charge attacks, if self is not in Missile Guide status. Affects self.
Missile Guide: Charge Speed ▲ 100% for 3 round(s).
Charge Damage ▲ 58.5% for 3 round(s).
■ Activates when reloading to max ammunition. Affects self.
Removes Missile Guide.
Monster Stage
■ Activates when landing Full Charge attacks. Affects target(s).
Deals 266.6% of final ATK as true damage.
■ Activates when landing Full Charge attacks if self is in Battle Formation status. Affects self.
ATK ▲ 20% for 3 sec.
■ Activates when landing Full Charge attacks if target(s) is in Explosive Round status. Affects self.
Projectile explosion damage ▲ 20% for 3 sec.
Missile Container Online
■ Affects self.
Explosion Radius ▲ 100% for 10 sec.
True Damage ▲ 60% for 10 sec.
■ Affects all enemies (including parts).
Deals 492.3% of final ATK as Burst Skill true damage.
Skill recommendations
Build
CUBES
Considering the Absolute duo doesn't provide reload speed buffs, Resilience is the best cube. If you have reload speed buffers on the team, run Rupture instead for more damage.
OL GEAR
Basic DPS build: Elemental DMG, ATK and max ammo capacity. When talking about ammo, try to get multiples of 4 for her basic attack to not waste missiles before reloading. Filler stats can be charge speed / damage or crit related.
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.
Pros & Cons
- Works REALLY WELL for high CP deficit gaps since true damage does not care for high defense on enemies. Used for hard campaign and tower progression a lot thanks to this
- Tactical Upgrade units were a flop. They release the first trio but only Vesti ended up being used consistently thanks to the true damage and ridiculous defense enemies have on hard mode and later stages in tower. Not really a con, just me ranting