What items should I buy with Quartz?

Quartz is a premium currency. You’ll get a lot of it through coupons, beginner rewards, achievements, and other tasks but remember that it’s not infinite. If you’re an F2P player, hold on to your quartz as much as possible but you can consider using them for the following:

* Buying classified employment contracts (for pulling in Awakened unit banners

* Buying skins (not all skins can be purchased with quartz). This is only worth it if you’re going to equip it on a character that you’re really fond of. Take note that skins don't provide stat boosts either.

* Expanding unit slots

* Expanding ship slots

* Expanding gear slots