Interesting aesthetic!
The TTK on the snowmen is very unforgiving; imo there should really be an audio cue, or checking for them should be easier. I checked the room, saw nothing, and died ~5 seconds later on one occasion, unless I misunderstood something. I'm not personally a big fan of mouse controls, especially in full screen; it's ok for the interactions but the buttons are small enough to be frustrating, though part of that will be me using a trackball. Being able to press A/D to switch screens would go a long way for game feel.
Fun idea anyway, and I think the working area is laid out well. I'd love to see it polished up a bit!