Earning Store Credit from Gameplay

I feel that the customization options are limited if you don’t purchase a lot of credits with cash. I wish there was a way to earn credit through leveling up or challenges.

Also, the customization is very limiting in the fact that most attachments are isolated to one armor type. If I want to use a specific helmet and chest piece that are designated to different body armors it is impossible.

Love the gameplay, I am having fun but i feel crippled in my creative appearance. Thanks guys!!!