The start is exciting, I love the text wobbles/effects and strange dialogue. It definitely helps the strange theme with how odd it all is. I also love how the text continues into the start, following the player... It's so cool and immersive!
Now, as others have said, the game seems unplayable past the first cliff. After pushing the box, not much can be done. I found the one secret passage while stuck, but it didn't help me unfortunately. Either I'm playing wrong, or the jump isn't high enough for the box to be pushed the opposite direction. This concept seems really cool, and with more time I'm sure it would be awesome. Good job on this, good luck, sorry I couldn't beat it.