This is one of the easier casual/ranked achievements it doesn't require anything from you other than to be in the game at the final credit screen win or loose from there if you like your team press "Keep Playing As A Team" or else press "Find Another Match" after 10 complete games you should get It Begins...
Quick Play
Match Win State: 3 - 5 rounds
Character Select: 30 sec
Prep Phase: 45 sec
Round: 3:30 min
Ranked
Match Win State: 5 - 9 rounds
Character Select: 30 sec
Prep Phase: 45 sec
Round: 3:00 min
***DO NOT PLAY UNRANKED FOR THIS!***