Fate Grand Order - Challenge 12: Alien Invasion Walkthrough

Guide for the Challenge 12: Alien Invasion in Fate Grand Order for the Saber Wars Event 2018 (US). Looking for a quick and easy way to finish the Challenge 12: Alien Invasion? Check out our Fate Grand Order guides here.

Challenge 12: Alien Invasion Guide – Walkthrough

The Challenge 12: Alien Invasion is one of the harder Altrium farming quests. As the twelfth of the Altrium quests, the Challenge 12: Alien Invasion doesn’t pose too much of a challenge and is well-suited for Sabers. Players can even opt to rely on pure raw power to mince through the incoming enemies.

Need help finding some items finding builds for servants? Check our Fate Grand Order Database here.


AP Cost 10 Bond Point 865
EXP 33815 QP 8900
Tendency Lancer/Berserker/ Saber First Reward Dragon Reverse Scale x 4


Enemy Information
Battle 1/3
Elite Altonian
(Lvl 40/ Lancer/ 87,922 HP)
Elite Altonian
(Lvl 40/ Lancer/ 87,922 HP)
Elite Altonian
(Lvl 40/ Lancer/ 87,922 HP)
Battle 2/3
Superman Herc
(Lvl 60/ Berserker/ 324,945 HP)
Battle 3/3
Super Space Dragon Zaxone
(Lvl 50/ Lancer/ 400,351 HP)
(Lvl 80/ Saber/ 1,068,025 HP)


Drop Item Information
Ascension Skill Reinforce
Ascension &
Skill Reinforce


  • Like all Alien Invasion Quests, the Challenge 12: Alien Invasion opens with one set of Altonians. However, as one of the last Daily Quests, you’ll have two daunting waves waiting ahead. The second wave has Heracles, waiting for you and the other has Altera and a Dragon.
  • The Chaldea Combat Uniform Mystic Code would be useful here in the Challenge 12: Alien Invasion especially if you’re planning to save one of your servants to counter Altera. That being said, if you have a strong Archer class servant, have this mystic code ready. The additional reinforcement will give your Archer class servant extra power especially when combined with Purely Bloom.
  • While using the Chaldea Combat Uniform Mystic Code, you can swap out servants to quickly whittle down the Heracles. As much as possible, take little damage from him as the third wave will need your servants with least 80% health.
  • Another servant who shines here is Siegfried. With the big dragon standing behind Altera, his Balmung can quickly bring it down before it rains fire on top of your team.
  • That being said, you don’t need to run a full Saber team to make the most of the battle. Unless you have Command Spells that are left unspent, bringing a full Saber team can easily get you wiped out if you don’t have the right servants.
  • After clearing these waves, you’ll finally get your well-deserved Altrium from the Challenge 12: Alien Invasion quest.

Saber Wars Event US (2018) Altrium Quests

Alien Invasion
1 2
3 4
5 6
7 8
9 10
11 12

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