The Codex of Power Aspects are earned through completing Dungeons or parts of the Campaign. These will be an important part of any D4 hardcore leveling because they will add power to each build to help with survivability, mobility, or kill speed. Because these aspects are guaranteed to be earned versus hoping for a legendary item to drop we can plan out which ones we want to use before starting our characters.
There are many different types of Aspects… Offensive, Defensive, Resource, Utility and Mobility. Here is a list of Codex of Power Aspects that will be useful for hardcore players early game.
This list focuses on options that will help survive hardcore and is broken down by class, starting with the Aspects available to every class.
Check out the HC Build Guides for which aspects are used on a specific build early on.

HC CODEX ASPECTS BY CLASS
EVERY CLASS
Aspect of Retribution, Aspect of Disobedience, Aspect of Shared Misery, Eluding Aspect, Ghostwalker Aspect




Unlocked by completing Dark Ravine in Dry Steppes












Unlocked by completing Broken Bulwark in Scosglen
BARBARIAN






DRUID










NECROMANCER
The Necromancer doesn’t have any Codex of Power Aspects that help with defensive or survivability. The class specific Codex Aspects for the Necro are focused on enhancing certain offensive skills.
The summons will help keep the necromancer alive. Having summons early on your hardcore gameplay may be a good idea.
ROGUE






Unlocked by completing Demon’s Wake in Scosglen




Unlocked by completing Prison of Caldeum in Kehjistan


SORC










