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.
Nightmare Fuel: Take your pick between emotionless soldiers who can stop tanks with a gun alone, or soldiers with flamethrowers who burn along with their victims.
Randel's dream/nightmares — though more so in the manga.
Another one for Randel when he cuts up soldiers manning an armored train with his giant scissors like he's pruning plants. *SNIP*
Squick: For a show about war, Pumpkin Scissors has very few graphic deaths until episode 14 where they show a cornered man getting hit with a flame thrower with disturbing attention to detail. Then there's the armored train arc where Randel cuts up soldiers manning said vehicle with giant scissors. We never see the actual moment of the cutting, but that just makes it more disturbing...