Here is the full list of all 55 Pixel Heroes: Byte & Magic achievements worth 1,000 gamerscore.
Defeated the boss of The Boneyard.
Revived 3 fallen heroes during one adventure.
Helped Jindid on his path to self-fulfillment.
Defeated the boss of the Old Volcano.
Defeated the inscrutable flying polyp.
Defeated the boss of the Goblin Outpost.
Listened to all stories of the barkeeper.
Evaded an attack by the use of Concealed.
Drank 100 glasses of beer during one adventure.
Defeated the boss of the Byting Woods.
Listened to Layment, the travelling musicians.
Defeated the boss of the Arcane Armory.
Lost all your heroes for the first time.
Finished your first quest.
Unlocked a treasure chest with no more than 20% chance.
Entered a bossfight with two alive heroes and was victorious.
Defeated the boss of the Haunted Mansion.
Defeated your first enemy.
Defeated three enemies with one hit.
Lose 10 times.
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 6 dungeons during one adventure.
Defeat an enemy only with the fist.
Uncover the dark secret of the casino owner.
Survive through 3 dungeons in a row.
Drink 50 healing potions during one adventure.
Defeat the boss of the Sunken Empire.
Defeat the boss of the Stormy Peaks.
Defeat the boss of the Devils Reef.
Defeat the boss of the Ancient Temple.
Defeat the boss of the Cyclopean Pyramid.
Defeat the boss of the Randoom Meteorite.
Defeat the boss of the Gates of Ashtur.
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.
Help Shroom on his path to self-fulfillment.
Finish a complete adventure 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.
Finish an adventure with Herbalist, Priest and Brewmaster.
Finish an adventure with Fighter, Barbarian and Warrioress.
Finish an adventure with Enchantress, Shadowmancer and Skyweaver.
Escape the red flyswarm 4 times.
Solve all 4 riddles of the enigmatic idols.
Reach 500 HP with one hero.
Enter a bossfight with a single alive hero and be victorious.
Defeat the captor of souls himself.
Finish the final campaign without a hero dying.