I liked the game, especially the Santa hats look nice on the NPCs. The dog makes me uncomfortable, when he's looking at me he seems to be angry. Maybe I forgot to feed him that night?
I had a bug at the final fight, when I died (sudden an invisible wall stopped  me) and after restart the final boss was just killed, although he had almost half his lifebar when I died.
Aside from that, nice idea to make it a little christmas-like :)