diluc

• weapons:
  • wolf's gravestone ★★★★★
  • serpent spine ★★★★ (battle pass)
  • prototype archaic ★★★★
• artifacts:
  • crimson witch of flames (% atk, pyro bonus, crit dmg/rate)
    • elemental mastery and recharge is ok but focus on crit dmg/rate

keqing

• weapons:
  • aquila favonia ★★★★★
  • the black sword ★★★★ (battle pass)
  • lion's roar ★★★★
  • prototype rancour ★★★★
• artifacts:
  • thundershooter (& atk, physical bonus/electro bonus, crit dmg/rate) - if not focusing on elemental reactions
    • elemental mastery is ok but not priority - focos on damage
    • other option 2 piece thundering fury + 2 piece gladiator

barbara

• weapons:
  • prototype malice ★★★★
  • thrilling tales of dragon slayers ★★★
• artifacts:
  • maiden beloved (better healing)
  • the exile (more burst)
  • the scholar (more burst - ranged characters)
  • the instructor (bigger team damage)
    • (energy recharge/hp, hp, healing) - focus basically on hp

bennett

• weapons:
  • sacrificial sword ★★★★
  • favonius sword ★★★★
  • festiring desire ★★★★
• artifacts:
  • noblesse oblige (full set)
  • other option 2 piece exile + 2 piece scholar
    • instructor for more burst; maiden for more healing
    • (hp, healing bonus - more hp, more healing)

fischl

• weapons:
  • skyward harp ★★★★★
  • amos bow ★★★★★
  • the stringless ★★★★
  • favonius' warbow ★★★★
  • rust ★★★★
• artifacts:
  • on field 4 piece thundering fury
  • off field 2 piece thundering fury + 2 piece gladiator
    • (%atk, electro bonus, crit rate on main stats)