Sakena

Damage type to protect against:
Guristas - Kinetic > Thermal
Serpentis - Thermal = Kinetic
Mordu's - Kinetic > Thermal
Blood - EM = Thermal
Sansha - EM = Thermal
Angel - Explosive > Kinetic > Thermal = EM
Mercenary - Explosive = Kinetic = Thermal = EM
EOM - Kinetic > Thermic

Main Damage type to shoot at the enemy:
Guristas - Kinetic > Thermal
Serpentis - Kinetic > Thermal
Mordu's - Kinetic > EM
Blood - EM > Thermal
Sansha - EM > Thermal
Angel - Explosive > Kinetic
Mercenary - Kinetic > Thermal
EOM - Kinetic
Prefixes
(Nothing) ---> Hidden ---> Forsaken ---> Forlorn
Combat Anoms (Easier -> Harder)
Hideaway ---> Burrow ---> Refuge ---> Den
Cluster ---> Collection ---> Assembly ---> Gathering
Yard ---> Rally Point ---> Port ---> Hub
Surveillance ---> Menagerie
Haven ---> Sanctum
Herd ---> Squad ---> Patrol ---> Horde