It looks beautiful, it's nostalgic, it's polished but it's not exactly fun?
There is a lot of text which is fun to read the first time though but then you get forced to click through again if you die and restart. Santa feels slow which is expected for stealth but I had trouble finding where the collision boxes were and it's confusing that the guard can move diagonally but Santa only in the 4 cardinal directions.
All in all, this would be great with a bit of fine tuning and some more levels to play