From Path of the Vampire Wiki
Raids are either solo or team events that are randomly generated in the city. There are currently three types of solo raid: battle raids, stealth raids, hacking raids. In each type of raid, you must advance to the top of the raid location by collecting keycards or performing a task on each floor.
|Battle Raids||Relic||Skills Required|
|Gangsters||Arcane Fetish||Firearms, Martial Arts|
|City of the Dead||Revenant's Ashes|
|Stealth Raids||Relic||Skills Required|
|Security 1||Plutocrat's Band||Stealing, Mechanics|
|Security 2||Necklace of Occultation|
|Security 3||Titan's Bracelet|
|Security 4||Ring of Danger Intuition|
|Hacking Raids||Relic||Skills Required|
|Security 1||Buckle of Retreat||Hacking|
|Security 2||Monocle of Modulation|
|Security 3||Sanguivore's Bane|
|Security 4||Healing Vambrace|
Raids are player vs. environment events; your success at each type of raid will be determined by your skills and attributes. Solo raids are run alone, whereas team raids can be run in groups of up to 6 characters. When participating in solo raids, in addition to the experience earned during the event, you have the chance to gain one of many relics. Only one relic is available per raid event.