The game looks great and is really well polished!
The matreshka mechanic is quite creative if a little underutilized. I feel the later levels become too samey with you moving from one button to the next. Not sure whether it is a problem of the level design or the mechanic itself has a low complexity.
There also were a couple times when the small guy was not visible behind the big one, and when it wasn’t 100% clear whether the pass is wide enough to move.
But nevertheless, amazing job!