I only completed the missions...
..."Welcome to Worlds"
..."Fight for Glory"
..."Teamwork - Objective Control"
..."Skill - Quick to Win"
The first one to get the Icon and than I got all three at the same time after a game. But it doesnt seem like there is another mission but "A Real Challenger" (link) which tells you to complete 4 Worlds Missions. I don't have other missions tho and only 35 Tokens, which is kind of sad, because I want to open those orbs.
This has to be a glitch right?
Would be happy if you could answer fast, so I have more chances to complete the missions.
Best regards ~ opappi