Enemies - Hardener to use - Damage type to use

Blood Raider - EM/Thermal - EM
Guristas - Kinetic/Thermal - Kinetic
Sanshas - EM/Thermal - EM
Serpentis - Thermal/Kinetic - Kinetic
Angel- All Resis (pri. Expl. ,Kin.) - Explosive
Mordus - Kinetic/Thermal - Kinetic
Rogue Drones - All Resis (pri. Expl. kin) - EM
Mercenary - All Resis (pri. EM, Therm) - Thermal
Minmatar. - All Resis - Thermal (sec. Explosive)
Gallente. -Kinetic/Thermal (sec..EM) - Thermal
Amarr - EM/Thermal. - Thermal
Caldari - Kinetic/Thermal - Kinetic
The Seven - All Resis - Thermal
EoM - Kinetic/Thermal. - Kinetic

Scout drone damage types:
Acolyte - EM
Hobgoblin - Thermal
Hornet - Kinetic
Warrior - E

*** Jammers ***
Caldari - Gravimetric = Spatial Destabilizer = BZ-5
Amarr - Radar = White Noise = 'Umbra'
Gallente - Magnetometric = Ion = 'Hypnos'
Minmatar - Ladar = Phase = Enfeebling