Sorry I can't speak Spanish, but you definitely nailed the winter theme! The background art was nice, but the art style overall felt a bit inconsistent, like why did the enemies have an outline, but not the player character? And it was bit distracting that the running animation kept playing even when you aren't moving. There were also some areas where I thought the background was a bit busy and the platforms weren't super visible, like at the start of the second level.
I liked that you added save points at different parts of the level and the moving platforms were pretty fun! The music was a very good fit, it felt very Christmassy! I think it could've used some sound effects though, especially for the jump, I think that would really help with the game feel! Also, there was a bit of a glitch in the first level where Santa got stuck between 2 platforms and I had to restart the game. But good job on managing to finish this much in 2 weeks, you got 3 pretty fleshed out levels!