TeamFight is a 5v5 team match in which the first team to score 5 round victories wins.
The victory in the round is achieved by completely eliminating the opposing team during main round time.
If the opposing team was not eliminated during the main round time, then additional victory conditions are activated. The overtime timer starts and activates special objectives in the center of the location that need to be captured. The first team to capture the point or finish off the opposing team wins the round.
If the winner hasn't been decided in the overtime, then a cleanup crew is released into the Arena, which will hunt the surviving contestants until one of the teams is fully eliminated.
To win, you must either defeat the enemy in battle, or capture the objective.