There are five main pirate factions in the game:

Angel Cartel - Minmatar-based
Blood Raiders - Amarr-based
Guristas - Caldari-based
Serpentis Corporation - Gallente-based
Sansha's Nation - Amarr-based


FACTION RESIST AGAINST ATTACK WITH
Angel Cartel 62% Explosive 22% Kinetic Explosive
Blood Raiders 50% EM 48% Thermal EM
Guristas Pirates 79% Kinetic 18% Thermal Kinetic
Mordu's Legion 70% Kinetic 30% Thermal Kinetic
Sansha's Nation 53% EM 47% Thermal EM
Serpentis 55% Thermal 45% Kinetic Thermal
Mercenaries 50% Thermal 30% Kinetic Thermal
Rogue Drones 70% Explosive 20% Kinetic Explosive

There are 10 different types of Anomaly Class:
(Anom ratting -> Escalations)
• Class 1 = Hideaway or Drone Cluster (easiest)
• Class 2 = Burrow or Drone Collection
• Class 3 = Refuge or Drone Assembly
• Class 4 = Den or Drone Gathering
• Class 5 = Yard or Drone Surveillance
• Class 6 = Rally Point or Drone Menagerie
• Class 7 = Port or Drone Herd
• Class 8 = Hub or Drone Squad
• Class 9 = Haven or Drone Patrol
• Class 10 = Sanctum or Drone Horde (hardest)

Cosmic Sigs -> DED sites

Each Anomaly Class has 4 different level's ranging from Level 1 (easiest) to Level 4 (hardest).
• Level 1 = Anomaly Class (easiest)
• Level 2 = Hidden + Anomaly Class
• Level 3 = Forsaken + Anomaly Class
• Level 4 = Forlorn + Anomaly Class (hardest)

* Damage types to protect against *
Guristas - Kinetic / Thermal
Serpentis - Thermal / Kinetic
Blood Raider - Thermal / EM
Sansha's Nation - EM / Thermal
Angel Cartel - Kinetic / Explosive / Thermal
Minmatar Fleet - Thermal / Explosive
Amarr Navy - EM / Thermal
Galente Navy - Thermal / Kinetic
EOM - Kinetic / Thermal

* Damage types to shoot at the enemy *
Guristas - Kinetic
Serpentis - Kinetic
Galente Navy - Explosive
Amarr - Explosive / Kinetic
Blood - EM & Thermal
Sansha - EM
Angel - Explosive / Kinetic