Haha the ending screen was great! Glad I played through to the end.
Solid concept, nice graphics, interesting puzzle mechanics. A bit too easy once you figure out how it works though. I'd love to see this expanded with even more tools in the toolkit and tricky levels with multiple solutions to discover!
One thing that would have been nice to have in this version is ability to restart a level or take back a monster I placed in the wrong square. There was only one level I failed, but I realized my mistake right away, however I had to wait for the hero to survive all the way to the end to try again. Don't worry. I killed him the next time >:]
Nice job! I enjoyed the experience!