Every time you fulfill a Bounty you'll
get Armor Spheres, which upgrade your armor.
You get Armor spheres in the rewards after killing some monsters, but you get a lot more of them by completing Bounties at the Resource Center.
Not exact matches
Once you've
got those done, head back to the Resource Center to turn the quests in and collect your
Armor Spheres, then go back to the Workshop and put them on whatever gear you like — your DEF will immediately go up.
Use the following method to
get lots of
Armor Spheres.
Despite being tied to bounties,
Armor Spheres are fairly easy to
get at a consistent rate.