This was fun! Spooky music and a fun and simple game mechanic. I enjoyed playing it when things were going my way, I think the only issues I had were that the horde was a little hard to manage, their health depleted a little too fast for my liking, leading me to pick health as an upgrade any time it was offered, and the zombies could sometimes pile in a way that only let one zombie attack the person, instead of 2-3. I'm also not sure if this is possible, but locking the cursor to the game window would be great, since the right clicking often caused me to bring up a menu, and if I did this while left clicking quickly trying to get the menu out of the way, it'd click something like Inspect Element that would bring me to a new page (not your fault, just an option of Edge). You can already drag to select zombies, I'd probably just have the player dragging to select and left clicking on the person to get rid of that possibility. But again, I did have a great time and I think you did a great job.