Some help with the Master missions?

Hey guys. Cutting straight to the chase, I need tips to clear this week's master missions as fast as possible. As a f2p, I need all the quartz I can get before the Jalter banner ends. Any quests where I can clear multiple missions at a time? Here's my progress so far:

-Clear all missions: 1/6
-Defeat 5 Evil servants: 1/5
-Defeat 5 Balanced servants: 0/5
-Defeat 5 Chaotic servants: 0/5
-Defeat 5 Berserker-class servants: 0/5
-Defeat 5 Assassin-class servants: 5/5
-Defeat 15 servants: 10/15