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