Solid little Undertale horror game! The controls and UI were really polished; you nailed the Undertale feel in that department. The only thing that didn't seem quite right was that the "bullet" effects would sometimes stick around a moment after the window had closed, but that's real minor. My favorite part was how the heart and menu slowly paled and turned blue, and slowed. I felt that the attack patterns lasted a bit long in the beginning of the fight, especially for how easy they generally were to dodge; it might have been cool to have them start fairly short, and lengthen slowly over the fight as winter bears down on you more and more. It also took me out of it a little bit that there was pretty much no agency from the start of the fight; it clued me in right away that nothing I did mattered? It might have been a little bit more effective for me personally if there had been something that seemed like it was doing something in the beginning, only to be revealed that it actually hadn't? Though it might be tough to do something like that without it being frustrating. I get it's a trope of this genre of fangames though so it's not a huge deal. Overall it's a solid game and my criticisms here are small nitpicks. Good job!