This game was pretty funny!
The concept alone made me laugh, which is why I decided to download it.
Now, I have to admit that I'm terrible at platformers, and thus did not get very far in the game.. But, for what I have played, I enjoyed it!
I liked how you have to obtain the bottles/pickles etc before you can continue and how it 'brightens' the world as you do.
The only thing I noticed was that at some moments, it felt like the jump button did not always work. Other than that, no bugs or glitches found (except getting to the sheep behind the wall at the first jump wall, but that one felt intentional).
I also made a little video on my experience, but be prepared to cringe as I suck terribly at platformers, as mentioned before.