I was confused at first about the controls. Mentioning you can click to place platforms will probably help others.
I got bored pretty quickly, until I saw there were enemies that showed up, that's when I panicked and started building structures to prevent the enemies from reaching the character. That's when I had the most fun, the realization that there was more to do and the building pieces I was given had more purpose. So I would suggest making the enemies show up sooner. I made it past 200m but got bored again as I felt like there was nothing much else to do at that point. I then tried to let the enemies reach me, but they didn't seem to do anything.
Interesting concept, I like the idea of building structures by clicking. Perhaps to guide characters across a landscape, while also making structures to defend against assailants.