"Route established"
I'm dumb, I spent a lot of time stuck in the first top down level because I thought the levers were only decoration because I pressed some keys which didn't trigger them, then at some point I checked the control menu, assigned the keys I wanted to A and B and then it flowed. In fact the top down sections actually don't waste your time so you can focus on the plateforming parts, the boss fight is cool too and is also exactly a NES kind of boss fight.
Both plateforming sections are just big and hard enough that they're satisfying to beat. I think I didn't love the wall jump because, I think, your character don't "stick" to the wall so you could perform the wall jump without pressing the arrow key in the direction of the wall, otherwise the controls felt good.
All the environments are perfect NES, great looking ones. However although it look great too I thought the character might use too many colours.
Cool game!