Here is the full list of all 39 BattleCON: Online achievements.
Complete 10 fights in Casual or Ranked modes.
Complete 50 fights in Casual or Ranked modes.
Complete 100 fights in Casual or Ranked modes.
Complete 250 fights in Casual or Ranked modes.
Complete 500 fights in Casual or Ranked modes.
Complete 1000 fights in Casual or Ranked
Complete 5000 fights in Casual or Ranked
Defeat an opponent with an Overdrive Finisher attack.
Complete 5 Daily Quests.
Complete 10 Daily Quests.
Complete 25 Daily Quests.
Complete 50 Daily Quests.
Complete 100 Daily Quests.
Complete 250 Daily Quests.
As Karin, defeat an opponent with 'Red Moon Rage' during any Casual or Ranked game.
As Shekhtur, defeat an opponent using a Priority 10 or higher attack during any Casual or Ranked game.
As Luc, defeat your opponent the same beat you ante Time Stop during any Casual or Ranked game.
As Hikaru, defeat an opponent with all 4 Element Tokens still in your supply during a Casual or Ranked game.
As Eligor, defeat your opponent using 'Sweet Revenge' and with 1 life remaining during any Casual or Ranked game.
As Kallistar, defeat your opponent without switching forms during any Casual or Ranked game.
As Rukyuk, defeat your opponent without using 'Reload' during any Casual or Ranked game.
As Cadenza, defeat your opponent on beat 4 or earlier during any Casual or Ranked game.
As Alexian, defeat an opponent with 3 Chivalry Tokens remaining during any Casual or Ranked game.
As Riflam, defeat your opponent by attacking for 10 damage or more during any Casual or Ranked game.
As Seven, defeat your opponent without transforming any styles during any Casual or Ranked game.
As Khadath, defeat your opponent using 'Dimensional Exile' during any Casual or Ranked game.
As Kimbhe, defeat your opponent with 'Mage Hunter' during any Casual or Ranked game.
As Magdelina, defeat your opponent while at Level 5 during any Casual or Ranked game.
As César, defeat your opponent while 'Endless Vigil' is active during any Casual or Ranked game.
As Marmelee, defeat your opponent with 'Astral Cannon' during any Casual or Ranked game.
As Mikhail, defeat your opponent with 3 Seals remaining during any Casual or Ranked game.
As Anath, defeat your opponent after activating all 4 of your Aspects exactly once during any Casual or Ranked game.
As Sarafina, defeat your opponent while 'Ritherwhyte Infusion' is active during any Casual or Ranked game.
As Evil Hikaru, defeat your opponent with all 4 Evil Element Tokens in your supply during any Casual or Ranked game.
As Iri, defeat your opponent after changing to each of your forms (including changing back to Magical Form) exactly once during any Casual or Ranked game.
As Rexan, defeat an opponent with 3 Curse Tokens remaining during any Casual or Ranked game.
As Kehrolyn, defeat an opponent with 'Hydra Helix' during any Casual or Ranked game.
As Burman, defeat an opponent with 'Dragonflare' during any Casual or Ranked game.
Deal 11 or more damage with a single attack.