Fate Grand Order - Prison Tower Event Guide: 2nd Gate – The Devil of Purgatory

Guide to the 2nd Gate during the FGO Prison Tower Event. Especially since this particular quest can be a pain to deal with, we've created an FGO event guide that will help you bring down that pesky boss at the 2nd Gate - The Devil of Purgatory.

Prison Tower Event Guide: 2nd Gate – The Devil of Purgatory

After defeating the lord at the first gate, the 2nd Gate now opens with Edmond Dantes leading the protagonist through the dungeon halls. As they go through the dungeon halls, they bump into another person who was trapped in the cell. Determined to help, the protagonist lets her out before facing against the lord of the 2nd Gate.

Battle Video


AP Cost 20 Bond Point 615
EXP 15690 QP 6400
Tendency Lancer/ Caster/ Saber/ Assassin/Archer First Reward Summoning Ticket x 1


Enemy Information
Battle 1/3
(Lvl 25/ Assassin/ 14,403 HP)
(Lvl 25/ Assassin/ 14,403 HP)
Battle 2/3
(Lvl 42/ Caster/ 126,879 HP)
Battle 3/3
Fergus Mac Roich
(Lvl 77/ Saber/ 201,324 HP)
White Chimera
(Lvl 40/ Berserker/ 77,579 HP)


Drop Item Information
Ascension Skill Reinforce
Saber Monument
Ascension &
Skill Reinforce
Talon of Chaos x 3, Heart of the Foreign God


  • Bring an Archer class servant with you to check after Fergus. You can also bring a Berserker class servant to keep up the damage. Servants such as EMIYA and Robin Hood can do pretty good damage against Fergus due to one lowering the damage output and the other inflicting Poison and Damage Reduction.
    • Robin Hood may be the most probable choice with him having an NP at Lvl 5. However, if you’re going to bring a Berserker and EMIYA, bring Elisabeth Bathory. That way, you have a consistent amount of NP flowing into you.
  • Actually, what helps is having Elisabeth Bathory use her NP which inflicts Curse especially on overcharge. During the last few moments, Fergus will use Mind’s Eye (True) to charge up his NP to completely eliminate your team.
  • Have one of your servants (particularly the Archer class servant) have Purely Bloom on them. That way, their NP will deal a ton of damage the moment they reach the last part especially if it’s been Maxed Out.
  • Nobunaga will also do great against Fergus Mac Roich due to him having the Riding skill. If you equip Nobunaga with the Motored Croissier CE, it’ll inflict extra damage on Fergus and easily put him down.

FGO Prison Tower

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