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