You can choose Dog as your avatar, and you make dog sounds, but you are in a human shaped spacesuit and have a gun and type things and do human stuff. And sometimes you die but then you are cloned and are okay
You can die to lava if you stand on/in it for too long. In the Hot Garbage DLC, Kronus will actively try to kill you in his bossfight by raising the lava beneath him.
The Floopsnooth Matriarch is the second boss you fight, and is said to be the only remaining member of its species able to reproduce. You’re forced to kill them to progress.
The end-game boss is literally named after a type of tumor which has its own organs. His backstory is self explanatory — something in the atmosphere gave him some bizarre alien cancer.
They take up an entire section of the map.
E.K.O also tells you the Orange Goo you consume is causing tumors to develop under your space suit and replace your body mass, but how reliable she is is very debatable.
Not the player, but the fauna when fed. Your CEO also video chats you while chewing with his mouth open. Maroon’s constantly make noises of farting and spitting.
A Geographer drone gets kidnapped by a pair of wild leopard-like aliens called Kapyena and you don’t get the distress call until later because of the distance. The ship’s AI reminds you that the Geographers can feel pain and suggests you hurry. You find the Geographer stuck in the mud still being clawed at.
there are enemies called "barfers" that supposedly projectile vomit to attract prey. it's not graphic [the stuff they spit out is orange] but could be unpleasant and/or triggering.
When you fall and take damage sometimes you can hear cracking (though this could just be the ground beneath you). There’s also the gross gooey noise that happens after destroying an Eyesprout