Full list of all 53 King's Quest achievements worth 1,800 gamerscore. It takes around 4-5 hours to unlock all of the achievements in the base game on Xbox One.
The base game contains 17 achievements worth 1,000 Gamerscore, and there are 4 DLC packs containing 36 achievements worth 800 Gamerscore.
Told the Story about becoming a Knight.
Saved a Picnic, Got a Wedzel Patch, Completed the Potion.
Defeated Acorn in the Duel of Strength.
Defeated Whisper in the Duel of Speed.
Opened door to Achaka three times.
Danced in the Dark.
Presented an Eye to enter the Tournament.
A Dyed Badger ate Bees.
Fed a steak to a Wedzel Wolf.
Tried to Catch a Toad, Got a Frog in Throat.
Blew on many Horns.
Walked on Water.
Walked into the Spiniferous Thornweeds.
Was a Snack for a Majestic Unicorn.
Found a Mysterious Cave Entrance.
Walked into a Dragon's Mouth.
Took a Brief Nap.
Completed Chapter 2
Escaped the goblin prison
Escaped without any townspeople taken away
Found all gold in Chapter 2.
Healed Bramble
Got some air
Get all pages in Chapter 2.
This is a hidden achievement.
Completed Chapter 3
Spared the life of a Wedzel Wolf.
Solved a puzzle on the beach.
Won a game of Moral Quarrel.
This tower was built to scale.
Discover 3 portraits of younger townspeople.
Give the perfect present to Neese.
Give the perfect present to Vee.
Completed Chapter 4
Shot an arrow at Ice Guard
Solved the Ice Labyrinth
Solved first Ice Palace puzzle
Won the road trip game
Lasted as long as I could in staring contest.
Seek treasure as an aged adventurer.
Mind the music.
Escape the Tournament Theater.
Prove your mind is still strong.
Prove your mind is still quick.
Defeat all puzzles on The Floating Island.