Dangerous Hobbies
While we are all for people taking up hobbies in their free time to fuel their creativity, we also believe that what you do shouldn’t inconvenience others. It looks like this OP’s neighbor has taken up archery as a hobby but he clearly needs to practice some more.
For now, the OP seems to be paying the price as one of his neighbor’s arrows managed to completely destroy his window and from the looks of it, this wasn’t the first time. We don’t know whether they offered to replace the window but at least, no one was injured so there’s that.