When playing as a predator student, how do I eat other students? The description on Aryion says I press "F" on someone once I reach 30% hunger, but it doesn't work even once I reach 0%.
You must highlight the stomach icon in order to consume other students, just like you highlight the item that uses keys to unlock the doors.
Also, it’s not 30%. It’s 15% of hunger or lower where you’re able to devour (Nightmare Mode is even lower than that).
