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