Grimshell Shocktroopers/Strategies

The suggest order to kill them is beating mages first, then the rest. For example:
 * Mages: 1) BLM, 2) WHM. Keep silencing or BLM will nuke a lot and you'll be defeated. Same for WHM
 * Rest: 3) PLD (take care with Invincible and wait before using WS), 4) THF (take care with Perfect Dodge and wait before using WS), 5) WAR, 6) DRK