What is fastest way to complete all mastery

Discussion
1

Tell me what is the easiest mission to grind in each mastery?

2 Likes
2

i wonder
what is it

1 Like
3

Maybe working

1 Like
4

What

1 Like
5

I ment what is the best mission to do for each mastery 1 2 and 3

2 Likes
6

Upgrades, derby challenges, energy core survival

1 Like
7

priv server with no one having core access:

2 Likes
8

Then have a friend who has core ._.

1 Like
9

Dont have one

2 Likes