Enemies Resistance type to use Damage type to use

Blood Raider EM/Thermal EM
Guristas Kinetic/Thermal Kinetic
Sanshas EM/Thermal EM
Serpentis Thermal/Kinetic Kinetic
Angel. Expl./Kin. (All Resis) 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

Incursion All resist All Resist

20 minutes for the Small Asteroid Cluster
1 hour for the Medium Asteroid Cluster
2 hours for the Large Asteroid Cluster variants
4 hours for the Enormous Asteroid Cluste