Hey there, cute little game here! I made it to level 18. Couple thoughts: 

• As others mentioned, the snowman and platforms are too hard to distinguish from the background. It makes it hard to keep track of where you are and where you should be going. This could be an easy fix. For example, choose a less bright white shade for the snow in the background so the snowman stands out. You could also add a black outline around the snowman and platforms. Experiment a bit! :)
• There were a couple times where I didn't actually get that close to the bonfire, but I still advanced. 
• I thought the mechanic where you can fall off the screen and appear from the top was an interesting thing to incorporate, but it did lower the stakes a lot, because there wasn't really a way to lose. I wonder if there is a way to balance that a bit more? 

Great effort here, keep it up!

The pixel arts are nice, but the background makes it hard to see what's going on. And I have no idea where the snowman went after the first level.

Nice game! Really liked the visuals. The snowman keep spawning off screen tho for me so I had to press the arrow key for a while before it showed up. I think fading the background would also make it easier to show where the platform and the snowman are.