Here is the full list of all 69 Hero Academy achievements.
Win a game by destroying the enemy's crystals.
Win a game with the Dwarves.
Add Runemetal, Dragonscale, and Shining Helm to a single Knight.
Win a game with the Team Fortress team.
Complete all Meet the Shaolin challenges.
Complete all Meet Team Fortress challenges.
Complete all Meet the Dwarves challenges.
Complete all Meet the Tribe challenges.
Complete the Tutorial.
Complete all Meet the Dark Elves challenges.
Complete all Meet the Council challenges.
Win a game with the Council.
Lower an enemy's maximum health by 250 with a Monk.
Hit three enemy heroes or crystals at once with a single Gunner attack.
Attack a single enemy with three different heroes in one turn.
Win a game with the Dark Elves.
Knock out a full-health enemy with one shot from an Archer.
Pull an enemy off an assault tile with an Impaler.
Win a game and take no crystal damage.
Win a game with the Shaolin Team.
Win a game by destroying the enemy team.
Resurrect and fully heal a knocked-out ally in a single turn.
Hit three enemies at once with a Void Monk's attack.
Shield a crystal with an Engineer.
Get a Paladin to heal herself.
Build up a max-health Wraith.
Debuff three enemies in one turn with a Poisoner.
Taunt an opponent.
Knock out two enemies at once with the Pyro.
Take all day to put in your turn after your opponent does.
Have an Engineer equip three allies in a single turn.
Hit four enemy heroes or crystals at once with a single Grenadier attack.
Hit an enemy target at maximum range with the Sniper.
Submit 100 turns.
Hit three enemies at once with a Heavy's attack.
Win a game against a random player.
Win a game with the Tribe.
Knock out three enemy heroes in one turn.
Stomp two enemy heroes in one turn.
Resurrect an opponent's Ninja, Wraith, Chieftain, or Annihilator with the Shadow.
Hit three targets with a single Windblade attack.
Knock out an enemy.
Submit five turns.
Use an assault tile to do bonus crystal damage.
Submit a turn less than three minutes after your opponent moves.
Use the undo feature and try something new.
Do 2000 or more damage with a single attack.
Destroy two enemy crystals in a single turn.
Win 25 games.
Win 100 games.
Hit three enemies with a single attack by a Wizard with a scroll.
Do 2500 damage or more with a single Ninja attack.
Win 50 games with the Council.
Weaken three enemies with the priestess in a single turn.
Raise two Phantoms in a single turn with a Necromancer.
Win 50 games with the Dark Elves.
Knock out three enemies at once with an Annihilator shot.
Win 50 games with the Dwarves.
Execute two enemies in one turn with a Warrior.
Hit three full-strength enemies in one turn with an Axe Thrower.
Do 1000 points of damage with a corpse explosion.
Heal three allies with a chained Shaman heal.
Damage five targets with one Chieftain attack.
Win 50 games with the Tribe.
Link a Medic to a Heavy.
Win 50 games with the Team Fortress team.
Win 50 games with the Shaolin Team.
Removed an enemy hero's buff and a friendly hero's debuff in the same turn with a Taoist.
Complete all Challenge Collection challenges.