[Ultra High Difficulty] BE-Witched (Curse)

Party Restriction: Cannot bring more than one of the same Servant.
Command Spell / Saint Quartz Revival is unavailable for this quest.

Special Field Effects:
If Eric is inflicted with Charm: "Gunnhild is furious at the scoundrel who's cajoling her husband!": Inflict Curse Damage Up by 5% on all frontline Servants (5 turns) x10 times (Total +50% Curse Damage each time).
Start of Each Turn: Gunnhild's Support: Increase Eric's DEF by 90% (1 turn) [Unremovable]. Decrease DEF by 30% and NP Gain by 30% for an enemy (5 turns). Apply Curse to an enemy (500 dmg/turn, 5 turns).
After 1st Break, Each Turn: Gunnhild's Intervention: Apply Evade to Eric (1 turn) [Unremovable]. Decrease DEF by 30%, ATK by 30%, and NP Gain by 30% for an enemy (5 turns). Apply Curse to an enemy (500 dmg/turn, 5 turns).
After 2nd Break, Each Turn: Gunnhild's Anger: Increase Eric's Damage Resist by 100% (1 turn) [Unremovable]. Decrease DEF by 30%, ATK by 30%, NP Gain by 30%, and HP Recovery by 30% for an enemy (5 turns). Apply Curse to an enemy (500 dmg/turn, 5 turns).
* Note each of Gunnhild's Support, Intervention, and Wrath effects are activated in order from left to right on fielded Servants and continue to rotate in that order.

Various conditions can prevent Gunnhild from activating her field effects each turn:
If Eric defeats at least one Servant: "Gunnhild is overcome with emotion due to her husband's actions!": Will not activate any of Gunnhild's Support, Intervention, or Wrath skills this turn.
If Eric uses his NP: "Gunnhild can't take her eyes off of her husband's Noble Phantasm!": Will not activate any of Gunnhild's Support, Intervention, or Wrath skills this turn.
If Eric deals a Critical Hit: "Gunnhild is enthralled by her husband's Critical hits!": Will not activate any of Gunnhild's Support, Intervention, or Wrath skills this turn.