Overall very interesting experience. So far, I'm missing two endings I think. I assume they are the floor -69 and floor -666. I have no idea how to trigger them yet.
I got endings 1,2,3,6 and 8. I'm pretty sure there's something with the food but I can't trigger it plus the secret ending that I don't know how to trigger either despite the hint.
Ending 5 is the kitchen. I chose the vegetarian diet, and "no pet", "eat the apple", "eat cat", "no". But I guess what really matters to get ending 5 is the last question.