I would remove the sliding and make the movement of the character more predictable. I can often get stuck in the ceiling or wall. Door triggers don't always work, so can't open it. Something like this.
Viewing post in Mia - Run! Don't Steal! jam comments
I tried a few more times now, the jams are gone and the doors are triggering right away. Maybe we tried an earlier version? It's strange that the artist and I ran into similar problems on different computers.
However, jumping needs some work, I think. Each jump is different from the previous one. And together with sliding ladders causes difficulties.
I repeat the visual and the idea I really liked! Good work!