Here is the full list of all 25 PAC-MAN™ and the Ghostly Adventures achievements.
Complete all levels of the Lemon Rocket arcade mini-game.
Defeat 100 enemies as Metal Pac.
Collect at least one Arcade Token in every level.
Complete all levels of the Pacerchini arcade mini-game.
Complete all levels of the Pineapple Tank arcade mini-game.
Defeat 100 enemies as Granite Ball Pac.
Increase Pac's maximum Health to 6.
Increase Pac's total lives to 50 or more.
Defeat 100 enemies as Chameleon Pac.
Complete the final level of the game.
Complete all bonus levels.
Collect enough Globe Energy orbs to unlock the Temple of Mystery.
Unlock Chapter 6.
Defeat 300 Blue (Scared) Ghosts.
Unlock Chapter 5.
Collect enough Globe Energy orbs to unlock the Temple of Ice.
Defeat 100 enemies as Fire Pac.
Unlock Chapter 4.
Complete all levels of the Cherry Copter arcade mini-game.
Defeat 100 enemies as Ice Pac.
Unlock Chapter 3.
Collect enough Globe Energy orbs to unlock the Temple of Slime.
Chomp 50 recycling bins over the course of the game.
Unlock Chapter 2.
Complete an entire level without losing a life.