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