I don't mind the visual assets of this game, but I had a similar issue with stairs that is addressed in other comments below.

I liked the character and the building, but I got stuck on the stairs a few times and that killed the run. I'm also unsure what the recyclable/harmful/normal garbage count are for? 

It's kind of nice that the game pauses when you click off the game window.

It'd be nice if you could press "R" to restart or "ESC" to either exit to the main menu or bring up a pause menu to restart or exit. I liked that there was an exit/replay option when the timer ran out.

I unfortunately could never get past the medium size stairs, which made for the game being pretty much unplayable when they showed up.

Nice idea, would have loved the movement to have more weight or speed to it, carry momentum instead of getting stuck on stairs. But nice idea :)

a very bare-bones prototype. I like the idea of having multiple collectable items (red, green and grey triangles) but I was unaware of any differences in values or use. 

I think idea is good, it would be better if it could be polished more or add more level design. And I will  get stuck on the stairs halfway through the game.

Unfortunately I kept getting stuck on the stairs, so I couldn't see much of the level. I can see you were going for a Geometry Dash sort of style, but I wish I could've seen a bit more.

Im not sure if its just me but the game did not work, when I got in the game I could only move forward before getting stuck on the stairs?