On a more free level? Distribution center, sell low tier officers and exchange for purple tier fragments, refresh is cheap too! If buying recommend the first 3 purchases of the officer you're trying to upgrade, on the 4th purchase it starts to lose a lot of value for price.
Thanks for taking the time to explain the concepts
Are you on discord?
If you are not a spender it will take forever to get to 6 stars!
Best way to get fragments?
On a more free level? Distribution center, sell low tier officers and exchange for purple tier fragments, refresh is cheap too!
If buying recommend the first 3 purchases of the officer you're trying to upgrade, on the 4th purchase it starts to lose a lot of value for price.