In the opening credits, young Yuri is shown to be burying a goldfish and crying over it. It's short and skippable, but the opening is in almost every episode of part 2, so tread carefully.
Damian's father gets angry at him and sighs in disappointment at him. Damian cringes in fear, implying that he knows that worse things will come if he pushes it. It's not very pleasant, and it's not meant to be.
Episode 14, at 09:00, a character says "Have you stewed human flesh in a pot?" implying that they resorted to that after starved to despair. Nothing more is shown or described, though.
There's a vision shown of a few characters dying after a bomb explodes and makes a building collapse on them. A "dead" body is shown on screen, but the vision ends up not coming true, and the characters live.
While brief, there are characters that are shown using performance enhancing drugs on themselves, and another character mentions that they were employed specifically because of their drug addiction.
The main character is a spy. He watches other people a lot, but it's not shown as stalking or creepy, only so that he can obtain information for his job.
A character learns information about someone without their consent or knowledge, in an effort to win them over in a romantic date. Another character directly calls him a stalker for it, and he is later rejected for the date.
Not explicit, but there's a scene in episode 14 where a character talks about people taking their own lives, and ropes appear on screen, heavily implying that they hanged themselves. Timestamp at around 09:00 - 09:20.
Episode 33 has WAY more blood than usual. Splatters everywhere, coughing up, blood flying, etc for the holes episode. Yor kills a lot of people and almost all are shown
Yes. Yor's cooking is to die for! Though animated and played for laughs, there are a lot of sound effects of it, as well as liquids coming out of a character's mouth as he vomits. It's not very explicit, again it's played for laughs, but it may be upsetting if you have emetophobia. Mostly in episodes 16, 17 (post credits scene), and 18.