Here is the full list of all 19 Divine Knockout (DKO) achievements.
Achieve 'Double KOs Silver'
Achieve 'Triple KOs Silver'
Achieve 'Triple KOs Gold'
Achieve 'Air-Time'
Achieve 'Victorious Gold'
Achieve 'Resilient'
Achieve 'Practice Makes Perfect'
Achieve 'The Penta-Ultimate'
Achieve 'Victorious Silver'
Achieve 'Destructive'
Achieve 'PvE'd'
Achieve 'Rebound'
Achieve 'Double KOs Gold'
Achieve 'KO Collection Silver'
Achieve 'KO Collection Gold'
Achieve 'Damage Dealer Silver'
Achieve 'Damage Dealer Gold'
Achieve 'Traveler’s Tall Tale'
Achieve 'Divine Knock Out!'