Was fun figuring out how to get further. Like what is done here. Things to add. Save points and powerups. 

It took me a while to get the hang of it, but once I did, discovering the correct path and shifting modes was pretty interesting! Trying to get the timing of the projectiles down despite not being able to see them made for some enjoyable platforming even if there weren't many other obstacles.

The game restarted when I reached the green square at the bottom level, so I assume I reached the end. Overall, it was a nice entry, if a bit confusing at first.

Great foundation for a game here, really liked the pixel art!

It's a bit confusing, and I'm not sure how I was supposed to leave the first two rooms, but it's unfinished, I think if fleshed out with the light concept it could be very fun

I like the idea of switching between modes to reveal different aspects of the level. I really like also how the cannon ball explosions are visible in dark mode to suggest not to go there. My only feedback is to have more of these features where you can see subtle indications of the hidden platforms etc when in the opposite mode. Great job :)