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)
Play Score Attack (10 Minutes) until the very end!
Score 1,500,000 points! (Score Attack 10 mins)
Finish Score Attack (5 Minutes) without using a bomb!
Emit sparks for 1 second!
Score 500,000 points! (Score Attack 5 mins)
Beat the game with every maze visual.
Beat the Time Trial mode!
Eat 30 ghosts in succession!
Play Score Attack (5 Minutes) until the very end!
Finish Score Attack (5 Minutes) with no mistakes!