Snow White: Heavy Arms

A Burst 3 sniper DPS who is strong in Water-weakness content.
Keeping up Full Charges lets her cover area and single-target firepower at once, so she is highly valuable in story, bosses, and Raids.

The key is keeping Full Charge going to keep building [Lock On] and [Auto Fire Ready]. While charging, [Lock On] attaches to enemies near the crosshair, and Lock On targets receive a damage-taken debuff. Firing a Full Charge attack deals all-enemy damage while she attacks sequentially at Lock On targets. Her skill [Shades of White]2 grants [Pierce], Increased ATK, and increased Damage to Parts on Full Charge, and adds Increased ATK on entering Burst stage 3. During her Burst [Seven Dwarves Fully Active]B, max Lock On count and loaded rounds greatly increase, sharply raising the firepower of a single Full Charge.

Basic progress is possible on auto.
However, to reach peak firepower, it is better to manually handle aim and timing so Full Charge attacks are not broken. Firing in short bursts (so-called tap-firing) does not suit this character.

Manual input needed

Prioritize Harmony Cubes that help pierce firepower and reload stability. Choose based on your cube levels and current ammo setup.

Set Elemental Advantage damage and ATK first, and use leftover lines on Max Ammo and Critical Damage to steady her firepower.

Skill 1 and Skill 2 contribute most of her actual firepower, so raise them first. Her Burst is a relatively lower priority for PVE; invest more if you have room.

She is highly valuable as a main DPS in story, bosses, and Raids. She is also used in PVP, but opponent lineups and timing matter a lot, so she depends on the lineup.

Her firepower based on Full Charge is high, and she can handle area clearing and focused single-target hits at the same time.

If she breaks her Full Charge or her aim wavers, her expected firepower drops sharply.