Relics are special Eridian equipment that players can equip to increase a certain aspect of a character. There are base Relics, with certain prefixes, that will always give a bonus in one or more aspects of that particular stat. Relics can be dropped by bosses, found in chests or even gotten as rewards from missions.
| Relic Type | Description |
| Aggression | Increases attributes of a certain weapon type |
| Allegiance | Increases attributes for a certain weapon manufacturer |
| Elemental | Increases a certain elemental damage type |
| Proficiency | Increases the Action Skill cooldown rate |
| Protection | Increases attributes related to shields |
| Resistance | Decreases damage received by various types of damage |
| Stockpile | Increases ammo capacity for various weapon types |
| Strength | Increases attributes related to melee |
| Tenacity | Improves attributes related to Second Wind |
| Vitality | Increases attributes related to health |
