the game is not loading for me, it is stuck at 90% in webgl?
I had that same issue, the solution was to set the compression mode to none in Unity > Build Settings > Player Settings > Publishing Settings > Compression Mode.
luckily you provided a windows build.
I like the idea of the game, the puzzle and the way the heart character shoot small hearts to the enemies to give them love. However, you need to add music and sfx. Rated! <3