Here is the full list of all 12 PAC-MAN Championship Edition DX achievements. It takes around 1-2 hours to unlock all of the achievements on Windows.
Score 2,000,000 points! (Score Attack 10 mins)
Score 1,000,000 points! (Score Attack 5 mins)
Finish Score Attack (5 Minutes) without using a bomb!
Beat the Time Trial mode!
Beat the game with every maze visual.
Score 1,500,000 points! (Score Attack 10 mins)
Play Score Attack (10 Minutes) until the very end!
Emit sparks for 1 second!
Finish Score Attack (5 Minutes) with no mistakes!
Eat 30 ghosts in succession!
Play Score Attack (5 Minutes) until the very end!
Score 500,000 points! (Score Attack 5 mins)