Here is the full list of all 25 Dungeon Of Dragon Knight achievements.
Finish first three levels in old school mode
Understand the story
Get the set of General Suit
Get the set of Wizard Suit
Put on a set of archer armors
Spent 100000 in one shopping time
First time finish the game
covered 90 percent of the dungeon tiles
Get the best magic weapon
Get the three kinds of magic sword
All characters wearing armors;
Carrying 200000 GP
Learned at least 5 kinds of skills for one character
Wearing a set of baggar suit
Resurrect a player
Kill a monster with only one hit
Finish the first level
Click on witch 100 times
Kill 50 monsters
Finish the tutorial level
First time fall in the a hole trap
Kill the first monster
Quit tavern without spending a penny
Find a secret place
Cast a spell