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