The station houses a number of animals, one of them being the Head of Personnel's dog, Ian. These animals can all die from various things, though it isn't graphic.
Additionally, antagonist players may have the specific objective to kill Ian for his meat.
Vomiting can occur under numerous circumstances (such as drinking too much alcohol) although is non-graphic. All that appears is a puddle and a short non-graphic description.
Creatures that take too much blunt damage "gib" and explode into organs. Other than that, the base game has no gore mechanics and most violence is non-graphic.
Ghost players are usually invisible to anyone but other ghosts, however there is a Revanent antagonist which is a ghost tasked with killing people and stealing their souls.
As it is partially a sandbox game, players could potentially harm animals in numerous ways. The chef job often butchers monkeys and kobolds in a way that could be upsetting for some.
Additionally, antagonist players may have the specific objective to kill Ian for his meat.