Star Command Trophy in Risk: Factions
Earn 10 stars and trade them for 30 troops.
How to unlock Star Command
This is best boosted locally with multiple controllers. Every turn that you capture at least one enemy territory, you will receive a card. Each card can have one or two stars on it and these stars can be traded in for additional troops at the beginning of your turn. To get this, simply have Player 1 take one territory each turn while Player 2 does nothing. Player 1 will keep receiving cards and once you get 10 stars you can trade them in for 30 troops and your trophy. (Again, remember that it must be Player 1 that trades in 10 stars in order for the trophy to pop)