Happy to see this entry return from RPG Mania 6 with some bugfixes and gameplay tweaks! Graphics and music are solid for this current stage of development. Game plays well but has plenty of room for future development, such as attack upgrades for the towers and archers. Adding some indication of enemy health or the amount of damage inflicted by towers/archers would also be a good priority for future development.
Should note that this is a tower defense game submitted to an RPG-centric game jam. That's fine, but now's the time to start incorporating more story and character elements. A simple way to do this might be to have each enemy wave led by a unique enemy commander who gives a brief introduction at the start of the wave, followed by a defeat speech if eliminated before reaching the castle keep.