Finish Blow activates when some of the boss monsters become 'groggy' during the battle.
When the boss mob is in groggy status, finish blow activates. Players can use ‘Finish Blow’ skill with astonishing graphic by entering the Finish Blow Key.
During party play, a player is selected randomly for Finish blower. If the user fails to enter the key, party members have to defeat the monster normally.