Nice visuals and audio, cool concept.
p.s. on level 4, the arrangement I tried to use caused the first tower to not shoot the enemies.

it kept shooting here rather than at them, is it because the turret shoots ahead of the targets?
Thank you for your feedback. The turrets calculate were the enemies will be in the time it takes for the bullet to reach them (at their future position). However, this breaks down when enemies are about to change direction. I'll fix this issue in the post-jam version. The turrets will then ask the enemies were they will be based on their pre-programmed path.