Damage types caused:

Guristas - Kinetic / Thermal
Serpentis - Thermal / Kinetic
Blood Raider - Thermal / EM
Sansha's Nation - EM / Thermal
Angel Cartel - Kinetic / Explosive
Minmatar Fleet - Thermal / Explosive
Amarr Navy - EM / Thermal
Caldari Navy - Kinetic / Thermal
Gallente - Kinetic / Thermal
Mercenary - EM / Thermal / Kinetic
Mordus's Legion - Kinetic / Thermal
Drones - EM / Thermal
Khanid - EM / Thermal
Thukker - Explosive
EoM - Kinetic

Best Damage to do to NPCs:

Amarr - Thermal
Guristas - Kinetic
Serpentis - Thermal, use Kinetic against BS's
Mordus - Kinetic
Blood - EM & Therm
Angels - Explosive
EoM - Kinetic/Thermal

http://eve-survival.org/wikka.php?wakka