Fantastic sprite work, and the mechanic is a really nice and inventive take on the theme.
It took me a while to realize that some of the levels were cut off until I went into full screen, and sometimes it felt like I was running into invisible objects and was having trouble progressing, but with more than 48 hours, I could totally see this being something to sink hours into. Well done.
I will say, on a completely unrelated note, I've never played any twin stick shooters before, so the mouse as laser beam felt a little unwieldy at times. Since this is more of a puzzler and at least with the stuff I got through not seeming too fast paced, I would love the option to control the laser with the arrow keys, but you know, this is small potatoes.
Really really great work here. Congrats! :-)