Drentika been seen in libraries. He keeps learning and learning!

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 Resist (Explo/Kin) ------ Explosive
Mordus -------- Kinetic/Thermal ------------ Kinetic
Rogue Drones -- All Resist (Explo/Kin) ------ EM
Mercenary ----- All Resist (EM, Therm) ----- Thermal
Minmatar ------ All Resist ---------------- Thermal, Explo
Gallente ------- Kinetic/Thermal (sec. EM) -- Thermal
Amarr --------- EM/Thermal. -------------- Thermal
Caldari -------- Kinetic/Thermal ------------ Kinetic
The Seven ----- All Resist ---------------- Thermal