It's fantastic !
Fortunately, you can shoot through walls to kill enemies. Okay, I clicked outside of the window several times by accident. XD
And if not I noticed a display bug of the sprite at the top left.
Also, I was almost at the end of the level and I had a wall collide bug where I couldn't move at all. It was not cool! = (
I haven't really built a level with the editor yet but looks really good to use it. I wish I had more weapons than just a ball of magic energy! x) Other textures or objects would be nice. Hope the development will continue and improve!