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!
Score 1,500,000 points! (Score Attack 10 mins)
Score 500,000 points! (Score Attack 5 mins)
Beat the Time Trial mode!
Beat the game with every maze visual.
Finish Score Attack (5 Minutes) with no mistakes!
Emit sparks for 1 second!
Play Score Attack (10 Minutes) until the very end!
Eat 30 ghosts in succession!
Play Score Attack (5 Minutes) until the very end!