Pretty fun arcade experience, nice entry! The thumping bass hits you right away and fits the frentic nature of the game perfectly. Add in a countdown timer, generous screenshake, crunchy sfx, particle tail, etc and you have a successful recipe for a high score chaser style arcade game. The online leaderboard is a very nice touch, and the mechanic of speed multiplying your score is a great design choice to keep the player engaged throughout. The presentation was well-down but I do think your entry is lacking a bit in the Christmas theme, it feels more like a traditional high score arcade game with some sprites of Xmas trees thrown in the background, than something with a real Christmas-inspired spirit. That being said, I had a fun time with the gameplay loop and you achieved an impressive amount of polish that makes everything feel nice and juicy. Cool game, and keep up the good work!!
edit: As others in the comments have said, it would make an awesome mobile game!