Don't AFK. It only takes one finger to warp away and save your hide.

Stacking Penalties:
1st mod: c(1) = 100.000% effectiveness
2nd mod: c(2) = 86.9119842% effectiveness
3d mod: c(3) = 57.1037996% effectiveness
4th mod: c(4) = 28.2469117% effectiveness
5th mod: c(5) = 10.5988834% effectiveness
6th mod: c(6) = 2.9989473% effectiveness

NPCs are weak to these damage types:
Angel Cartel - Explosive
Blood Raider - EM
Guristas - Kinetic
Sansha's Nation - EM
Serpentis/Sevens - Kinetic
Mercenaries - Thermal
Drones - EM / kinetic
Amarr Navy - EM / Thermal
Caldari Navy - Kinetic
Gallente Navy - Thermal
Minmatar Fleet - Thermal
Ammatar Mandate - Thermal
Thukker Tribe - Thermal

These systems have career agents, do 10 missions for 1 to boost faction standing:
Amarr: Conoban, Deepari, Pasha
Caldari: Jouvulen, Uitra, Akiainavas
Gallente: Trossere, Couster, Clellinon
Minmatar: Embod, Hadaugago, Malukker