Damage types dealt by enemy NPC:

Guristas %75 Kinetic / %25 Thermal
Serpentis/Caldari %50 Thermal / %50 Kinetic
Sansha/Blood Raider/Amarr %50 Thermal / %50 EM
Angel Cartel 0.7 Explosive / 0.2 Kinetic
Mordus Kinetic / Thermal
Corpim EM / Thermal
Rogue Drones Thermal/Kinetic/EM

Damage types to use Against Enemy NPC:

Angel EM(shields)/Exp(Armor) & Thermal
Amarr Navy EM(shield)/Exp(Armor)
Mordus EM(shield)/Exp(Armor)
Gurista EM(shields)/Exp(Armor)/Therm & Kinetic
Blood Therm
Sansha Therm
Serpentis Therm
Mercenary Exp
Caldary Navy Exp/Kin/Therm
Khanid EM(shields)/Exp(Armor)

1 Class 1 = (Faction) Hideaway or Drone Cluster (easiest)
Class 2 = (Faction) Burrow or Drone Collection
Class 3 = (Faction) Refuge or Drone Assembly
Class 4 = (Faction) Den or Drone Gathering
Class 5 = (Faction) Yard or Drone Surveillance
Class 6 = (Faction) Rally Point or Drone Menagerie
Class 7 = (Faction) Port or Drone Herd
Class 8 = (Faction) Hub or Drone Squad
Class 9 = (Faction) Haven or Drone Patrol
Class 10 = (Faction) Sanctum or Drone Horde (hardest)

normal -> hidden -> forsaken -> forlorn