Here is the full list of all 52 Dragons and Titans achievements.
Complete 50 multiplayer matches
End a match with the fewest total dragon kills
Score 10 Assists on enemy dragons in a single match
Completed the Advanced Training scenario
Kill the Chaos Titan in an online match.
Restore 6000 health on other dragons without dying
Complete 10 multiplayer matches with a 2:1 or better Kill-to-Death ratio
Complete 10 multiplayer matches
Score the final hit on the enemy Cage
End a multiplayer match with the 2nd highest total Score
End a multiplayer match with the highest total Score
Deposit 10,000 Gold in a single match
Kill 50 Minions across all matches
Score 50 Kills on enemy Minions in a single match
Kill an enemy dragon near your own Titan
End a match with the highest Gold collected
Kill an enemy dragon near a friendly Obelisk or Shrine
Kill an enemy dragon near a friendly Tower
End a match with the highest total Minion kills
Assist in destroying the enemy Cage and releasing your Titan
An additional bounty for continuing the daily fight. (Repeatable 1x Daily, PvP Only)
Defeat the enemy team in glorious battle and free your Titan!
End a match without dying and at least 1 kill
End a match with the highest K/D ratio
End a multiplayer match with the 3rd highest total Score
Play a match without dying to Minions or Turrets
Score 10 Kills on enemy dragons in a match
Take 10,000 Points of Damage without dying or returning to hoard.
Complete a PvP match
Finish a battle with a K/D ratio better than 1.0
Upgrade all Abliities to their max in one match
Kill 5 Dragons without dying in an online match.
Kill 10 dragons at point blank range
Kill 10 Minions across all matches
Destroy an enemy Obelisk or Shrine
Kill 3 enemy dragons without dying
Restore 1000 health on other dragons during a match
Kill an enemy dragon near an allied dragon
Destroy an enemy Elemental Tower
Kill 1 Minion
Completed the Proving Grounds scenario
Kill any enemy with a single attack
End 5 consecutive matches at the top of the Scoreboard
Complete 1000 multiplayer matches
Kill all 5 enemies at the same moment in an online match.
Kill 1000 Minions across all matches
Kill 100,000 Minions across all matches
Kill 1,000,000 Minions across all matches
Destroy 100 Towers in online matches.
Destroy 500 Towers in online matches.
Destroy 1,000 Towers in online matches.
Complete 100 multiplayer matches