I'm just not sure how to use the paradigms well. I seem to be a very offensive person, so I usually just used those, but I don't know how to use the defending paradigms with good timing and use.
What the roles basically do-
Commando: Deals a massive ampunt of damage when an enemy has been staggered
Ravager: To stagger an enemy
Synergist: To buff your characters; might not seem useful at first, but the later bosses and missions are a *****, so these are needed
Medic: To heal team partners
Sentinel: To defend yourself and attract enemy attention so that your other guys can keep on doing their thing
Saboteur: To mess up your enemies
When fighting strong enemies, I recommend you start with Sentinel/Saboteur/Synergist. Buff your guys, weaken your enemies, and use Sentinel so that your Syn/Sab guys don't die. After that use Commando/Ravager/Medic. To heal, increase stagger rate, and deal damage. After your guys are fully healed and your enemy is staggered, use Commando/Commando/Ravager. Ravager to keep on increasing the stagger rate, and two Commandos to deal a f@ckload of damage......
Only if you have the right abilities