For those who may be confused on my comment about Covenant resembling a slasher film...
Unless there's actually a xeno wielding a knife and slicing people up (I doubt it very highly), then it can't be a slasher film by definition. However, that's not to say that it can't resemble a slasher film. I'm not a fan of the genre, but most slasher films I've viewed usually have a scene or two where the villain kills the hot girl in the shower. So, when I see a xeno killing someone in the shower (something we've never really seen in the Alien films before), I automatically link it to a slasher film.
well then.... there it is lol