RavenLimited

In Raids and long boss fights where Iron Code has the advantage, she is great for top-tier damage setups, and her sustained damage/Burst structure suits bosses that last a long time.
In content like Campaign, where mobs die quickly or targets switch often, she drops in priority.
Her firepower comes largely from Full Charge sustained damage and Full Burst buffs, and against bosses with many parts she spikes especially hard when weak point strikes, part destruction buffs, and TempestB's all-enemy damage overlap.

Each time a Full Charge attack hits an enemy, sustained damage is applied to the one aimed target, and it can stack several times within a short window. Entering Full Burst Time grants her Increased ATK.

At the start of battle and the start of Full Burst Time, Weak Point Strike grants Damage to Parts increase, and when an ally destroys an enemy part while she is not in A.N. Mode, Focused Attack replaces Weak Point Strike and extends the sustained damage increase for longer.

Her Burst, TempestB, deals Burst Skill damage to all enemies and parts, puts her into A.N. Mode, which removes Focused Attack, and sharply raises her sustained damage increase.

Repeat Full Charges on the same boss to fill the sustained damage stacks, then use her Burst.
Right after reloading, line up your shots and keep the Full Charges going.
In boss fights, even on auto her Full Charge-focused pattern does not fall apart much.

Rocket Launcher reload is long, so prioritize Reload Speed, and pick max ammo and Charge Speed to fit more Full Charges between reloads. If Harmony Cube levels differ a lot, use the higher-level cube ahead of the ranking.

Keep Elemental Advantage damage and ATK lines. Max ammo and Charge Speed help when you want to fit more Full Charges within each reload window. Fill leftover lines with Critical Damage and the like.

Her damage depends on sustained damage and her Burst's sustained damage increase, so start with S1. On battlefields with parts, S2 matters more.

Used as the lead DPS in boss fights against Electric Code enemies (Iron advantage) and in Iron lineup Raids. Her priority drops when the element does not match.

Against bosses with many parts, her burst damage balloons when weak point strikes, her all-enemy Burst, and sustained damage overlap.
Even on single bosses, her damage continues around her Burst as long as the sustained damage is maintained.

For a Rocket Launcher her blast radius is narrow and her attack tempo slow, so her mob clearing and Burst Gauge generation are close to below average.
Shock Wave1's sustained damage has a short duration in the skill text, so if you cannot keep landing Full Charges on the same target, the stacks drop and must be rebuilt.