Damage done by NPC's (resists):
Guristas - Kinetic & Thermal
Serpentis - Kinetic & Thermal
Mordus - Kinetic & Thermal
Blood - EM & Thermal
Sansha - EM & thermal
Angel - Kinetic, EM, Thermal & Explosive
drones - all
Mercenary - Kinetic, EM, Thermal & Explosive

Damage to shoot at NPC's (attacks):
Guristas - Kinetic
Serpentis - Thermal
Mordus - Thermal & Kinetic
Blood - EM & Thermal
Sansha - EM
Angel - Explosive
Drones - EM- thermal
Mercenary - Kinetic

There are 10 different types of Anomaly Class Abyssal
• Class 1 = Hideaway or Drone Cluster (easiest) * Dark
• Class 2 = Burrow or Drone Collection * Calm
• 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)

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)