Hi, yes I did playtest the game and I was able to complete it. I didn't realize until watching some friends play it that the controls are difficult to understand due to the limited space you are given to really learn them. If I had more time I definitely would have made the first room bigger and easier to play around with things.
If you are looking to beat it, one thing to note is that you can push off the wall perpendicular or parallel to it. So to get out of the initial box you must position yourself on the middle-bottom tile, press W and release Space to push upwards. The "puzzle" aspect of the game comes into play because when you push off, you can only grab onto a surface in front of you -- forcing you to think ahead as to which way you will need to face in order to reach certain areas. Also don't reset in the second room, there's a bug that causes the spawnpoint to be in the wrong spot which softlocks the game.
If the controls are frustrating, I'm sorry and I understand, I will be updating this game after the jam with better controls and some other bugfixes I found after submitting it. Thanks for playing and commenting.