Neat idea, though even in it's current form it badly needs some camera controls. Would have been fun if it had a few complete levels.

The stopping movement and being hidden in a box reminds of metal gear solid haha. I know you didn't finish it but good effort. Making the character's movement speed faster would be nice. The music was pretty bumpin, I enjoyed it. Level editor was an ambitious idea

It's hard to judge because, as you said, the game is not finished. The cat in a box idea is cool (cats love boxes so much, weird that they don't walk in them!). I also like the stopping/starting movement animation.

It's strange to me that you have a level editor in a jam game. I'd advise you to not use your precious time for that next time ;P