Here is the full list of all 55 Pixel Heroes: Byte & Magic achievements.
Finish an adventure with Herbalist, Priest and Brewmaster.
Lose all your heroes for the first time.
Finish an adventure with Fighter, Barbarian and Warrioress.
Finish the final campaign without a hero dying.
Defeat the boss of the Gates of Ashtur.
Unlock all hero classes.
Help Mustachio on his path to self-fulfillment.
Help Captain Capslock on his path to self-fulfillment.
Help Sapphire on her path to self-fulfillment.
Finish an adventure with an all-Dwarf party.
Defeat the boss of the Randoom Meteorite.
Help Shroom on his path to self-fulfillment.
Defeat an enemy only with the fist.
Unlock a treasure chest with no more than 20% chance.
Uncover the dark secret of the casino owner.
Help Jindid on his path to self-fulfillment.
Listen to all stories of the barkeeper.
Solve all four riddles of the enigmatic idols.
Revive 3 fallen heroes during one adventure.
Use 50 potions during one adventure.
Enter a bossfight with a single alive hero and be victorious.
Enter a bossfight with two alive heroes and be victorious.
Drink 100 glasses of beer during one adventure.
Defeat the boss of the Ancient Temple.
Defeat the boss of Old Volcano.
Defeat the boss of the Byting Woods.
Evade an attack by the use of Concealed.
Finish a complete adventure without dying once.
Finish an adventure with an all-Human party.
Defeat the boss of the Cyclopean Pyramid.
Defeat the boss of the Sunken Empire.
Finish 6 dungeons during one adventure.
Defeat the boss of the Haunted Mansion.
Defeat the boss of the DevilsReef.
Defeat the boss of The Boneyard.
Listen to Layment, the travelling musicians.
Survive through 3 dungeons in a row.
Defeat the boss of the Stormy Peaks.
Defeat the captor of souls himself.
Defeat the boss of the Arcane Armory.
Finish your first quest.
Defeat the inscrutable flying polyp.
Defeat the boss of the Goblin Outpost.
Defeat three enemies with one hit.
Reach 500 HP with one hero.
Defeat your first enemy.
Lose 10 times.
Lose 50 times.
Lose 100 times.
Finish an adventure with an all-Skyborn party.
Finish an adventure with Enchantress, Shadowmancer and Skyweaver.
Lead all citizens to maximum happiness.
Play at least once with each hero class.
Finish an adventure with each hero class.
Escape the red flyswarm 4 times.