From 43:27 till 44:25 there is a brief scene where main character is reminiscing about a childhood memory. A pig is slaughtered, you do not see the slaughter, but you do see the pig afterwards, dangling from a hook in the ceiling bleeding out.
The main character's father died and we see a a burning building in the related flashback. Whether he was burned alive or killed and then the building was set on fire is unclear as it is neither shown nor explicitly mentioned.
At about 11 minutes in, Jakub has a nightmare where a spider is crawling under his eyeball, spider legs come out of his nose and mouth. Then he wakes up
The main character's father died in the past. While we do not see his death directly, we see glimpses of the aftermath, including a post-funeral scene.
There are no scenes that explicitly try to evoke feelings of entrapment or claustrophobia, but the majority of the movie plays in a small spaceship, which may cause claustrophobic individuals distress.