So I've been reading all platform climb tutorials and this is the mechanic /feeling I liked the most:
I applied it to my current proyect but there's one problem. If you climb into a platform through a ladder you can't go down because the floor becomes solid again. The way it works is while you're on the ladder the solid becomes unsolid so you can pass through kinda like a jumpthrough behaviour but once you're on the top of the platform you can't go down.
In the capx you can actually do it because there's no platform on the top of the ladder, but in my case I can't do that because tilemaps and the skeleton of the map. My ladder goes through the platform kinda like forming a cross