Here is the full list of all 8 Dragon's Lair II: Time Warp achievements.
Watch the entire game
Complete the game on Original Mode
See the "You Missed a Treasure Again!" screen.
Collect all three treasures in the first level
Complete the game in Director's Cut
Collect the Butterfly Treasure on the first try
Complete the game in Director's Cut, no move guide.
Complete the game in Original Mode, no move guide.