Here is the full list of all 20 Santa Protects the Christmas Tree achievements.
Play and finish a game on any level.
Play and finish a game on all four levels.
Unlock all Upgrades.
Achieve 5000 score in a single game on Powdering Peninsula.
Achieve 5000 score in a single game on Wonder Village.
Achieve 5000 score in a single game on Peaky Point.
Achieve 5000 score in a single game on Fancy Forest.
Protect the Christmas Tree for more than 20 minutes in a single game.
Achieve 10000 score in a single game.
Defeat 2500 snowmen in a single game.
Finish a level without moving.
Play 1 hour with the game.
Defeat 10000 snowmen with snowballs.
Pick up 1000 special present power-ups.
Return 1000 stolen presents to the Christmas Tree.
Run 42 kilometers with Santa.
Defeat 10000 snowmen with Flares.
Defeat 30 snowmen with a single Flare.
Defeat 2500 snowmen with Bubbles.
Play and finish 25 games.