It's difficult but cute! And I like the bits of comedy throughout the game - before I even realised it was a mechanic I laughed at the bullet weaving through the light fixtures, it was just a good moment.
I do think a better way of showing what's hittable and what isn't would go a LONG way, the background objects vary in how noticeable they are and it wasn't always clear what I didn't have to worry about until it was too late.
My main issue though was once depth got involved - it was a little tough to have to focus on the shadows of the objects as well as their actual position. I think it's due to the main movement mechanic being vertical meant players were trained to be looking at the approaching objects in a particular way spatially, then throwing another way in felt like a bit high a difficulty spike (at least for me).
Still a fun little game with a good splash of humour! I will say the assertion at the beginning that you had "one life" immediately proved false when the level restarted but that's a minor gripe lol