I'm really sorry you've been having trouble running the game. I was able to significantly reduce the file size, but I'm afraid any further reductions would require me to remove elements from the game, and I just couldn't bring myself to do that. I've made some optimizations that should reduce VRAM usage and thus lead to better performance. I hope that helps.
As an alternative, I’ve also created a new version where I’ve replaced all assets, textures, and the monster with hand-crafted low-poly versions. I tested it on a low-end laptop and it ran pretty well. Just please don’t judge the graphics based on that. xD
Thank you so much for your interest in my game!