I'm a little bit confused on the levers - locks. So should they be numbered? Color-coded? Both? Or is that just to communicate this to the developer? Also the arrows are very confusing. I recommend taking information like this out of the level overview and giving it it's own spot. For the level overview, if it's combined with an explanation on the side, the color coded locks and levers are more than enough.
I would also rethink the second part as this seems rather over complicated. You have two features that would need to be coded on top of the 2DGame Kit - rope swing and wall jump. You also don't use these anywhere else in the level, so the amount of work to return ratio is rather poor.
For better readability - avoid handwritten notes and fancy fonts. Don't overuse arrows! Don't use them for descriptions (AKA arrow pointing to description "orange ball"). For pathways, low opacity line is better, only using arrows sparingly to signify the direction.
Good job :)