I need a custom door proof of concept

[dmpdesign]

Another optional and fairly easy bandaid for your climbing problem is just to put a textureless model at the base and top of the ladder to interact with, as just an invisible event holder.

I sure hope you can fix the issues SOM has with going up and down though, any movement in the vertical direction above a crawl I found causes you to fall through objects or be pushed to the side of the object.