Full list of all 12 Dragon's Lair achievements worth 200 gamerscore. It takes around 3-4 hours to unlock all of the achievements on Windows.
Achievements they've won
Achievements they've not won
Beat the game without dying
Dirk dies via asphyxiation in the bedroom scene
Get the highest possible score (427,469).
Lost your last life in the Drink Me scene... and watched carefully.
Completed the game with the move guide turned off.
Complete the game in Arcade Mode
Completed the game in Hard mode.
Beat the game on any mode.
Use the shortcut move in the Giddy Goons Room
Get off the elevator on the last floor
Never make a correct move in a new game.
Played Dragon’s Lair on its anniversary: June 19