Been there ....... done that ........

NPC DAMAGE TYPES (TANK):

Guristas - Kinetic(95%)/Thermal(5%)
Serpentis - Thermal(50%)/Kinetic(50%)
Blood Raider - EM(50%)/Thermal(50%)
Sansha's Nation - EM(60%)/Thermal(40%)
Angel Cartel - Kinetic(35%)/Explosive(50%)/Thermal(10%)/EM(5%)
EoM - Kinetic(85%)/Thermal(15%)
Rogue Drones - Kinetic(35%)/Explosive(50%)/Thermal(10%)/EM(5%)
Mercenary - EM(35%)/Thermal(35%)/Kinetic(15%)/Explosive(15%)
The Seven - Explosive(35%)/Kinetic(35%)/Thermal(15%)/EM(15%)
Mordu Legion - Kinetic(60%)/Thermal(40%)

Main Damage type to deal
Guristas - Kinetic
Serpentis - Kinetic/Thermal
Mordus - Thermal/Kinetic
Blood - EM/Thermal
Sansha - EM/Thermal
Angel - Explosive
Mercenary - Thermal
Corpum - EM/Thermal
Gist - Explosive

Rouge drone faction drop -Sentiant