Not enough audio visual feedback to show that something is happening. I had to click everywhere to find out that you had to spam click on enemies to kill them off. Also couldn't progress at the end, enemies were not spawning.
Apologies for the glitches with the progress at the end, I fixed it now.
I agree about the visual feedback, wanted to add a red flash to the enemies when damaging them (and even sfx) but ran out of time.
Thanks for playing!