Full list of all 10 Pac-Man 256 achievements worth 1,000 gamerscore. It takes around 3-4 hours to unlock all of the achievements on Xbox One.
All achievements
Achievements they've won
Achievements they've not won
Fully upgrade every powerup
Unlock every powerup
Complete 16 missions
Earn a x16 Ghost Multiplier from a Power Pellet in singleplayer
Fully upgrade a powerup
Eat 64 Fruit pickups in singleplayer
Score a 256 in singleplayer
Play a multiplayer game
Eat 64 Ghosts while using a Power Pellet in singleplayer
Eat 2048 Pac-Dots in singleplayer