Thank you!! We were very proud of the shading as we learned very quickly that Unreal and NPR do not get along very well, unfortunately we didn't give level design the time (or testing) it needed, and while I wish I'd figured it out sooner, I'm so happy to have learned it like this too.
The fire extinguisher thing I had no idea of until reading your post and that is really funny, we also noticed that our first instinct was to chuck the extinguisher away when trying to spray lol.
We did initially make it so that you didn't stick on floors at all, and then set it to the shift keybind as we kept colliding with corners that looked passable, to be honest just designing the level with that and scaling up the door is a much simpler idea and I wish I'd thought of that!!
Thanks again for the post (and apologies it took me so long to reply)!