Herc's Twelve Labours: Grant him 11 times Guts, each Guts revive him to half Max HP. Cannot be removed. You can check how many Guts he has remaining by tapping on his HP bar and hold for 3s.
Herc's Art debuff: On Wave 3 Turn 1, he will cast a permanent team Art debuff. This is a REALLY severe debuff (around 90%) and can be removed. This does not affect backline Servants and he will not recast this.
Second Match: Master & Disciple of Light & Shadow
Wave 1: Werewolf (Lancer) x2 & Goblin (Lancer) x1
Wave 2: Werewolf (Lancer) x2 & Goblin (Lancer) x1
Wave 3: Scathach (Lancer) 500k HP + Cu (Lancer) 300k HP
All buff & debuff can be removed.
Team NP Seal for 3 turns (auto cast on Wave 3 Turn 1).
Very high crit chance.
Spam Dodge when alone.
NP has very high instant kill chance.
When death: Cu will cast a skill that instantly kills everyone, increasing his crit chance and crit damage, every hit he does can also inflict instant death (low chance than his NP).
Spam 3 hit-dodge if dodge buff isn't on him yet.
NP has very high instant kill chance.
When death: Scathach will cast a skill that instantly kills everyone, increasing her crit chance and crit damage, every hit she does can also inflict instant death (low chance than her NP).
Third Match: Night Parade of a Hundred Kills
140 Hassans (3 in front, 37 in backline) in Wave 1
1x Cursed Arm Hassan
1x Hundred Face Hassan
1x Hassan of Serenity
13x Small Hassan
12x Medium Hassan
11x Big Hassan
1x Final CA Hassan
CA Hassan: On death, cast Doom (1 turn, single target, auto-cast)
Small Hassan: On death, cast a Def down + Quick down debuff (3 turns, single target, auto-cast)
Medium Hassan: On death, cast a Def down + Art down debuff (3 turns, single target, auto-cast)
Big Hassan: on death, cast a Def down + Buster down debuff (3 turns, single target, auto-cast)
HF Hassan: On death, cast Doom (1 turn, single target, auto-cast)
Final CA Hassan: On death, cast Doom (1 turn, team, auto-cast)
Fourth Match: Re-advent of the Demon Dragon
Wave 1: Wyvern (Saber) x3
Wave 2: Wyvern (Saber) x3
Wave 3: Wyvern (Saber) x2 + Siegfried (Saber) 50k HP
Charm all males (PERMANENT) (does not hit your backline, removable).
High resist to all card type (90%).
3 layer of Defense buff, 30% each.
Removed one by one by killing her soldiers in this order (Not removable otherwise): Rider A: Invincibility Rider B: Art Rider C: 1st layer of Defense buff Rider D: Buster Rider E: 2nd layer of Defense buff Druid A: Quick Druid B: 3rd layer of Defense buff
The Queen's Adoration
Will cause one of these effects:
Full charge (fully charge NP of her allies).
Focus Fire (all Soldiers will target inflicted Servant).
Heal her Soldiers for 20k HP.
Golden Rule (Body)
Will cast this when all her Soldiers are dead.
Soldier: Dedication to the Queen
On entering battlefield, increase party attack (permanent, removable).
Charge (increase Medb NP gauge by 2).
Soldier: Return to the Queen
On death, increase Medb attack (permanent, removable).
Sixth Match: The Oldest Hero
Wave 1: Centaur (Archer) x3
Wave 2: Centaur (Archer) x3
Wave 3: Gilgamesh (Archer)
Gilgamesh's skills: The King Awaits on His Throne (turn 1 auto-cast)
"Clock" buff (20 turns): every turn, cast Attack up (20 turns), does not consume an action (removable).
Team NP power down (10 turns, including reserve, not removable, around 50%).
Reduce NP gauge to 0 (including reserve).
Removing this buff will prompt him to do the following: "I'll Acknowledge Your Effort" (fully charge his NP), Enuma Elish, then recast the buff.
Recasting the buff requires an action (not auto-cast).
Finale: All Out Competition
Jack the Ripper (Assassin)
Auto-cast: 3 times buff success rate down.
Jack on death: 5k HP Regen per turn to all allies (permanent).
NP: Deal damage to one of your allies (special attack against a female servant).
Team poison 1K HP damage per turn for 10 turns.
Medea on death: Def Up 50% to allies which cannot be removed by any means.
NP: Deal damage to one of your allies and remove Buffs.
Altria Alter (Lancer)
Altria on death: +2 NP gauge charge per turn to all allies (includes backline and cannot be removed).
NP: Deal damage to all of your allies and inflict curse.
Amakusa Shirou (Ruler)
Auto-cast: Team Max HP down by 2k for 10 turns.
Amakusa on death: Crit Rate Up to all allies (includes backline and cannot be removed).
NP: Deal damage to all of your allies and remove buffs.
Auto-cast: Imperial Privilege for 5 turns.
Spams Protection from Ra per turn.
Ramesses on death: Sure Hit to all allies (includes backline and cannot be removed).
NP: Deal damage to all of your allies and inflict NP Seal.
Thrice-Setting Sun (Guts 3 times - 53K HP).
Auto-cast: Imperial Privilege 100% chance per turn.
Nero on death: Guts on her allies (1 time Guts - 20% HP).
NP: Deal damage to all of your allies.
How to beat boss servants
Medea should generally be killed second-last (after depleting Nero’s Guts, but before killing her for good); if Medea is killed too early, her 50% defense up will be a severe hindrance.
Debuff removals are recommended to take care of Jack’s debuff, although Servants with multiple buffing skills such as Waver work as well.
When bringing along a Guts-reliant Servant (i.e. Cu Chulainn (Alter)), Ozymandias should be killed as late as possible.
Servants with Taunt are recommended for the stage, as the damage dealer would most likely be a Berserker.
Alternatively, with LB event CE and the help of Command Seals, it is possible to have an AoE NP Berserker (Lancelot / Minamoto no Yorimitsu) wipe the enemies with two consecutive Noble Phantasms. Sherlock Holmes is also recommended for this strategy.