Awesome presentation. I like the dialog and storytelling. One thing I can mention is the animation commitment; I could not skip any animation at all and there were many that could be skip. I know internally there has to be a iteration throughout the tiles to check if other monster see the monster you just placed but there is no need to animate that because it takes time specially if you repeat a level many times. Same goes when gnomes move position. At some point, I reached Level 6 or 7 and there was always preventing me from winning and the animations were taking so long that I decided to review the game. Very good game overall. Excellent job.
BTW this is a lot of content for a gamejam, I guess you must have had prepared a couple of things before hand.