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