Very nice pack of assets. I just want to let you know that your work is appreciated and I hope you will find the time and motivation to keep enriching this. You made a very good job already !
The mechanic is both very original AND very well used in your levels. I couldn't help but notice several "anti-soft-lock" spikes. I figured out how to lock myself anyway ;p.
I see that you only used one asset pack. This is challenging, well played !
The game is simple but nicely implemented. I noticed a little bug when moving into the walls where you can get stuck in mid-air. But apart from that, it was a nice experience !