These are what we call the 'YMMV items.' Things that some people find in this work. We call them 'your mileage might vary' because not everyone sees these things in the same way. This starts discussions in the trope lists, a thing we don't want. Please use the discussion page if you'd like to discuss any of these items.
The bit where he realizes there aren't enough bullets left for him to kill Laura as well counts.
Fridge Horror: What happens to Laura's mother when Martin tracks her down after he realizes his wife escaped from him? The film never answers that question. (This could also go under "Plot Holes" below.)
The nurse interrupts him before he can smother her, at which point he leaves. I think the viewer can safely assume she's all right
Narm: The scene where Laura discovers the rearranged cans and realizes Martin has tracked her down tends to come off like this.