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