Xbox Live Soldier is an achievement in Street Brawl.
Description[]
Player must complete any Mission over Xbox LIVE.
Gamerscore: 10
Guide[]
Each mission is made of 3 stages. For the achievement you'll need to complete every stage of a mission. The first one is the shortest so better go for that one. Each completed stage will bring you back to the lobby, don't worry it's normal. Just choose the next stage and launch the game again.