The stink of moist carpet, the mono-yellow, the hum-buzz of fluorescent lighting, this is the most well-known level of The Backrooms, as most unwitting travelers who noclip in land here. This level has a survival difficulty of Class 1 officially, (safe, devoid of entities), although recently reports of a “Bacteria monster”, believed to be a sentient, mutant strain of the “hay bacillus” bacteria, have emerged. This is thought to be a new entity which has evolved in The Lobby in recent months.
The other main threat on Level 0 is dehydration and starvation, as there is no food or drink to be found here. Your only hope of survival is to successfully find your way onto Level 1, (the Habitable Zone), where crates containing food, almond water, and other supplies can be found.