After getting all the notebooks, the exits appeared above me, and I can't really do anything about that, so yeah, it's pretty much unbeatable
As for the other thing, I tried using the chalk eraser to hide from Baldi or other characters, but it didn't work in the slightest (it even has a hitbox which is annoying
Actually, there are a bunch of items that don't work properly, the trowel is very awkward to use cause either it appears behind you or something, which ruined a couple attempts at fast mode
And the faculty tag also doesn't prevent NPCs from interacting with you
Also, if you enter Gotta Sweep's room while he's in, you can't get out (or rather, it's nearly impossible to escape Gotta Sweep compared to regular Baldi's Basics, which can be really annoying)