From the introduction:
Adeptus Evangelion is a modification of the Dark Heresy Roleplaying Game ruleset geared for running games in the world of Neon Genesis Evangelion. Inspired by the fanfiction “Shinji and Warhammer40k” by Charles Bhepin, Adeptus Evangelion brings the grim dark brutality of the 41st millennium to Earth’s defense in its darkest hour.
The players take the role of the pilots of Evangelions, colossal living chimeras of alien and human DNA, covered in armor and bent to Humanity's will. It is a dangerous position, and not just for the obvious reasons. The fact that your character can Synchronize with the creature makes you a very special person. It’s probably for the best if you don’t ask about the test pilots either. Or why Mom left.
It is important to note here that Adeptus Evangelion does not require adherence to the story of Evangelion, Warhammer 40k, or even Shinji and Warhammer40k in order to play. Rules and tips for running games that diverge from these storylines will be provided later.
This game requires the Dark Heresy Core Rulebook to play, and no rules from that book will be reprinted here.