Here is the full list of all 42 Knights of Pen and Paper +1 achievements. It takes around 20-25 hours to unlock all of the achievements on Windows.
Choose a weird combination of character and class.
Play with all characters in game.
Buy all goodies in game.
Unlock all masters.
We know it may be frustrating to die so we've just rewarded you with this achievement. Do not give up, the game is about to begin!
Play with all classes in game.
Unlock the Shaman class.
Finished the campaign.
Use a potion while full health.
Clear a dungeon.
Visit your Kitchen inside the game.
Kill a dragon.
Reach Level 30 in any character.
Reach Level 30 in every character of your group.
Reach Level 30 in a trio.
Buy the highest armor upgrade available.
Buy the highest weapon upgrade available.
Spend 9.001 golds.
Earn 9.001 golds.
Unlock the Necromancer class.
Unlock a new master.
Visit every single place in game.
Unlock the Knight class.
Unlock the Bard class.
Gather 10 grindstones from veins.
Unlock the Hunter class.
Reach Level 15 in any character.
Unlock the Barbarian class.
Unlock the Game Developers that made the game.
Make the blacksmith dance.
Reach Level 15 in a specific Spell.
Reach Level 5 in any character.
Win a battle with 7 monsters.
Roll 20 in any random roll.
Roll 1 in any random roll.
Kill an elite minion.
Gather a grindstone by mining veins.
Continue the game after a game over.
Complete a campaign using all 5 Game Developers as characters.
Finish the storyline as fast as you can (less than 365 days but you may extend that to 465).
Clear 10 dungeons.
Clear 50 dungeons.