Thanks for playing, the feedback, and the kind words.
Balancing is certainly tough. We enjoy Tower Defense games, so initially had it much harder. In prep for the jam we dropped it down, including removing alternate paths for enemies to come from, and went a little too far. I do want to work on adding difficulty settings into more of our games, but I always end up putting it off, wanting more to be in place first, and running out of time for jams. Eventually we want our jam games to have a normal difficulty for people who play that style, and an easy mode for those who don't.