You can join a Squad Brawl game by selecting the Play button at the bottom right-hand side of your Home screen.
In the Choose Your Game Mode window, select Battle then tap the Ready button.
Battle consists of 4 modes that you can randomly join, including Squad Brawl.
You will be matched with other players to form a Squad of 4. You and your teammates will pick Hunters simultaneously, if another teammate picks the Hunter you want before you do, you have to select a different Hunter. When you have chosen yours, tap the Select button.
When eliminated in Squad Brawl, you respawn in a random location that is closer to your allies and near the action, unlike other Game Modes where you are returned to base.
You will be alerted when either your Squad or the opposing team has reached the halfway point of the battle.
If there's a draw when the time ends, the Squad that scores the first elimination within the next 30 seconds shall claim victory.