The game is quite interesting as the premise is so rarely used. The monsters also suits the theme that you are attempting to portray as well. I'd suggest reworking the sprint mechanic a bit so that it don't blind the player while they run, but instead gives them a temporary warm up effect that gives them a faster freeze rate once they stop running. Otherwise, great demo.
Here's my channel for other games I have played. http://www.youtube.com/c/Levont