I think a large part of the difficulty for this jumping puzzle/race is about not being able to figure out where to go. This could probably be solved pretty easily with some environmental clues and more careful usage of color/contrast. Adding a few carboard panels in jump spots on blank areas like the roofs or even wooden ramps.
Especially for the final jump onto the tower, I think putting some higher contrast scaffolding in the spot you can land at would work. I've drawn in some here:
You can actually make it from here pretty easily if you stand on the railing.
I wasn't actually aware of the significant difference in the order of jumping and dashing, which is another reason I had trouble, but I think the path finding issues are an easier to solve level design issue.
Sorry if this comes across as mean, but I think this game has really good potential. It just needs some polish.
As a side note, I feel like the game is pretty blurry on my setup. Any idea why that might be? Playing 1920x1080 on fullscreen with AA on and CRT off, but the blurriness still feels like a lot.