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