I've tried it a few times, and the most I've managed to kill is four people before I got arrested, but I had a lot of fun. It's very creative with the ASCII art, and the couch is really comfortable for waiting for the right moment, hehe. Great job!
Also I found if you hang out with a body juuust inside a room (blocking 1 tile past the doorway), no one will enter that room due to how pathfinding works...so you can try and use that to time things. Though, that wasn't my intention. 😅