To fight against the Eclipse version of Archetype Earth, you have to win every fight, win at least one battle with PERFECT, win multiploe battles with Arc Drive Finish, and have over 2,000000 points by the end of match 7. After fulfilling the above conditions, during match 7 (after the first or second battle), "New Challenger" screen will appear and you'll engage in the fight versus Archetype Earth (Eclipse ver).
Unlock the following character by completing Arcade mode with the corresponding people under the Normal or better difficulty setting without using any continues:
CHARACTER - PEOPLE Archer - Play as Tohsaka Rin. Assassin - Play as Caster. Berserker - Play as Illyasviel von Einzbern. Caster - Play as Kuzuki Soichirou. Emiya Kiritsugu - Play as Saber. Emiya Shirou - Play as Tohno Shiki or Nanaya Shiki.. Fujimura Taiga - Play as Yumiduka Satsuki. Gilgamesh - Unlock all other characters. Illyasviel von Einzbern - Play as Kohaku. Kotomine Kirei - Play as Ciel or Powered Ciel. Kuzuki Soichirou - Play as Nrvnqsr Chaos. Lancer - Play as Kotomine Kirei. Matou Sakura - Play as Hisui. Matou Shinji - Play as Michael Roa Valdamjong. Neco-Taiga - Play as Fujimura Taiga. Rider - Play as Matou Sakura or Matou Shinji. Saber - Play as Emiya Shirou. Tohsaka Rin - Play as Tohno Akiha (either version) or Akiha Vermillion.