I found the game's visuals very impressive, the atmosphere reminded me of the game Limbo, and the dialogue balloons are a really cool touch.
There are some problems with the design of the levels, several times I was confused about whether or not there was a collision, and this made me fall several times.
Unfortunately I found several bugs, here are some of them with some solutions I thought of:
Some boxes could be pushed even though they were far away, this could cause soft locks.
Another problem is the menu, whenever I accessed the menu the boxes returned to their original positions (on the positive side it avoided the soft locks from the last bug). This can be circumvented with a variable storing their positions and a script in 'On Init' that sends them to those positions.
You could move the boxes even if you were on top of them, you can choose 'If actor relative actor' and set it so that the action doesn't happen when the character is on top of the box.
And lastly, it was the mobile platforms that stopped moving. Just add a variable that defines a delay of a few seconds after making a movement, this way it won't stay still and will make each movement at a time.
Considering all the bugs, it's a pretty cool and impressive game for a first attempt at platform style (My turn was much worse XD), I hope the bugs are fixed, I'd love to try the game again.
Good luck in your work.