Great job on completing the jam! It's an interesting idea!
I wish that there were more UI elements and different elements did different things. I found it was easiest to use the elements to make a blockade and then drop the health on them when there were too many. I found that you could click the already placed elements to let out a burst of damage, but it was difficult to keep up with for a long time. I didn't really feel like flinging the UI did too much.
For the art you did a good job with representing the different types of enemies and how they looked like bugs. I feel like more color could've been used to help with the setting - for example the background - instead of having a solid color could've used different shades of blue to give a cyber appearance. I liked that the different bugs had different silhouettes!
Finally for the music and SFX I think that it matched the style you wanted as mentioned in the GDD. You could've used more SFX when you picked up a UI element or rammed it into an enemy to make it feel more impactful.