Here is the full list of all 53 Dungeonland achievements.
Slow down 6 monsters at the same time using The Merry Killer
Kill a Hero affected by your Evil Freeze ability
Trap all Heroes inside a single Trapping Walls spell
Play for 6 hours
While equiping the Tin Armor, pick up an extra Life
While equiping the Gentleman Suit, pick up a Potion
Complete a level with no sheep harmed
Kill 5 enemies with a single sheep
Earn 5,000 lifetime Gold
Complete a level with at least one active Challenge
Win a DM Mode match as the Dungeon Master
Wipe out the Hero party with a Boss monster
Your first DM unlock
Kill 50 Heroes as the Dungeon Master
Kill a Hero with a Possessed monster
Kill your first Hero as the Dungeon Master
Buy an item on the store
Complete the Tutorial
Defeat The Elder Dragon on Hard difficulty
Defeat The Elder Dragon on Harder difficulty
Defeat The Elder Dragon on Impossible difficulty
Defeat The Beer Holder on Hard difficulty
Defeat The Beer Holder on Harder difficulty
Defeat The Beer Holder on Impossible difficulty
Defeat The Lumber Tree on Hard difficulty
Defeat The Lumber Tree on Harder difficulty
Defeat The Lumber Tree on Impossible difficulty
Earn 100,000 lifetime Gold
Win a DM Mode match as a Hero
Unlock all DM Spells
Unlock all DM Monsters
Unlock all DM Special Monsters
Unlock all DM Traits
Unlock all DM Bosses
Unlock all DM Possession Abilities
100% Game Completion. We bow down to your awesomeness.
Kill a friend. We know it was an accident... right?
Complete all Dungeons as Warrior
Complete all Dungeons as Rogue
Complete all Dungeons as Mage
Kill 300 Heroes as the Dungeon Master
Have a Hero open your Mana Mimic
Use Ace Up The Sleeve to draw an Ace Up The Sleeve card
Have a Hero activate one of your traps while using Stealth Traps
While equiping the Lion Armor, kill an Elite monster while under 10% health
Defeat the Elder Dragon while dressed as the Classic Party
Defeat the Elder Dragon on Impossible while dressed as the Classic Party
While dressed as the Horse Party, complete DM Tower in less than 30 minutes
Deal 16000 damage in one stage using The Cannibal Chef
Backstab 6 monsters in less than 15 seconds using Wereknife
Pierce 4 enemies with a single Charged Shot using Bow of the Flying Duck
As Defender, complete a level without attacking using Sword of Baloon
Complete a level with 3 Lancers using Steam Lance