Elemental Damage is a gameplay mechanic in Arknights.
Certain enemies are capable of inflicting Elemental Damage "build-up" to friendlies through various methods. Should a friendly unit's Elemental Damage build-up reaches a certain threshold, the unit will receive various negative effects depending on the type of the Elemental Damage inflicted. When a unit's Elemental Damage build-up reaches maximum, it will deplete itself over 10 seconds during which the unit will not receive any further Elemental Damage build-up.
Wandering Medics remove Elemental Damage build-up as they heal friendly units, which they will do even on those with full HP.
|Nervous Impairment||Introduced in Under Tides, Nervous Impairment causes the victim to receive heavy Pure damage and are temporarily stunned when it procs.|
|Corrosion Damage||Introduced in Dossoles Holiday, Nervous Impairment causes the victim to receive heavy Physical damage and have their DEF permanently reduced (which can stack indefinitely) when it procs.|
|Burn Damage||Introduced in Episode 09, Burn Damage causes the victim to receive heavy Arts damage and have their RES temporarily reduced when it procs.|
- The way Elemental Damages work is similar to status ailments in "Souls-like" games (Dark Souls series, Bloodborne, Sekiro: Shadows Die Twice, and Elden Ring).
- There exists in the current Chinese version an as of yet unused "flag" — a trait that can be applied to a unit in code — giving the recipient immunity to Elemental Damage, making them unable to receive any. The flag is called "ELEMENT_FREE_ALL" in the code.