Revival: GUDAGUDA Yamataikoku - Challenge Guide: Open the Demonic Heavens (Oda Nobunaga & Nobukatsu)

Requirements: The Main Quest line for the Event and Singularity: Solomon must be completed before this quest can be attempted.

• This challenge quest is unchanged from the original run. The guide remains largely the same, with the exception of updates to the Suggested Servants table section for new Roster introductions.
   
• Face off against the Oda siblings in the GUDAGUDA Yamataikoku challenge quest! Nobunaga’s Avenger form has 3 HP bars (477k, 526k, and 600k HP), while Nobukatsu, an Archer, has 2 HP bars (406k, 420k HP).
• Nobunaga begins with an unremovable 70% DEF passive effect. Note this can be removed by defeating Nobukatsu.
• Nobukatsu will do an action every turn for the first 3 turns so long as his first HP bar isn’t broken:
  • Turn 1: Starts the battle by charging Nobunaga’s NP Bar by 2 and granting Nobunaga Ignore DEF.
  • Turn 2: Grants Nobunaga 4-hit Invincibility and restores their HP by 50k.
  • Turn 3: Increases Nobunaga’s Crit Rate by 30% for 2 turns and removes a defensive buff from each Servant on the Master’s front line.
  • He repeats this sequence continually so long as he isn't broken.
• After Nobukatsu’s HP Bar is broken, he will gain max NP Gauge use his NP, and kill himself. This is ideally done before he uses his second turn Invincibility skill, although the Invincibility can be pierced or removed if necessary.
• When Nobukatsu dies, Nobunaga gains Max NP Gauge, clears all their debuffs on the next turn, gains a massive ATK buff, and changes the field to Burning. Note they also lose their 70% permanent DEF buff.
• Nobunaga's AoE NP removes defensive buffs from [Divine] trait targets before dealing damage, so make sure any Servants that have Divinity are provided Buff Removal Resist beforehand (or be prepared for them to take the brunt of the NP damage)!
• On Nobunaga’s first HP bar break, they gain a 5 turn Crit Rate buff, making it much more likely for them to land critical hits.
• On Nobunaga’s second HP bar break, they will inflict Burn of 2000 dmg/turn on the Master’s frontline for 5 turns.
• In the event that Nobunaga dies before Nobukatsu, Nobukatsu will gain a massive permanent ATK, DEF, and Ignore Invincible buff on himself. He also clears his own debuffs. He will no longer use his NP on break if alone.

• Moon Cancer, Lancer, or Berserker Damage Dealers work well, given the two bosses are Avenger and Archer Class. Choice of damage dealer is relatively flexible, however, and other Classes will work (although avoid Ruler or Sabers due to disadvantage).
  • Note that the boss's NP removes defensive buffs from [Divine] trait allies, which include the welfare Nagao Kagetora. She can still be used, although will need extra support such as from Buff Removal Resist to avoid dying to Nobunaga's NP.
• Bring the Event Damage CE, The Queen Priestess’s Spare Moment, on the primary damage dealer to maximize damage done, preferably max limit broken. The CE also provides starting 50% NP Gauge, which can be helpful in getting the damage dealer’s NP out earlier.
• Evade or Invincibility on the damage dealer, or through a support, is a good idea. Make sure to set up defensive measures immediately after Nobukatsu kills himself, since Avenger Nobu is guaranteed to unleash at least their AoE NP afterwards (which cannot be avoided through stun/charm/drain, due to the fact they max charge their NP and clear their own debuffs via a scripted effect).
• Ignore Invincibility through support or on the damage dealer's skills / CE can be helpful, but is only needed if not planning to break Nobukatsu's HP bar on the first turn (he only uses his Invincibility skill if his first HP bar is still not broken at the start of turn 2).
• Damage and NP Gauge Support is helpful to increase damage output and defeat Nobunaga/Nobukatsu as quickly as possible. If Nobukatsu isn’t killed on the first turn, he will grant Nobunaga a 4-time Invincibility, which can cause the fight to drag out unfavorably. Nobunaga’s critical hits hurt and occur quite often, so bringing Nobunaga down quickly is ideal.

• Note that these videos are not affiliated with GamePress, but showcase some lineups that are effective in clearing the final challenge. These can serve as a good reference for how to rotate skills during this quest or simply to have a look at the encounter before diving in.
  • Gilgamesh NP3 3-turn ft. Reines, Merlin, Chen Gong, Beni-Enma, Altria Caster (3 turns)
  • Space Ishtar NP5 3-turn w/ 2x Altria Caster, unused backline (3 turns)
  • Lancelot Berserker NP5 3-turn w/ 2x Skadi, Waver, Caster of Okeanos (3 turns)
  • Welfare 4* Setup w/ Support Altria Caster: Nagao Kagetora, Mozart, BB, Hans, Mash, Support Castoria (7 turns)
  • Kama NP3 solo w/ Meatshield Lv1 Wu Zetian + Lv1 Odysseus (Battle of Camlann MLB) (10 turns)
  • Low Rarity Setup ft. Mori Nagayoshi w/ David, Georgios x2, Cu Chulainn, Avicebron (12 turns)
  • Heracles NP5 setup w/ Waver + Chen Gong only, no backline (5 turns)