Doors and Ladders are quite hard to implement.
1. Looks like you have collider on the moving door - I would implement a switch that turns the collider so you can go through the door even if the door is still opening (adds more dynamics)
2. When interacting, after closing the dialogue the mouse pointer stays not captured.
3. Jump feels too short.
Also I would agree with p4songer regarding the sensitivity option.
Loved the piano mechanics!!!
Great start anyways!