Very good art, audio and gameplay, well done! I didn't understand the hacking mechanic at first, and ended up being wiped by the first enemy. Moreover, I didn't understand why I could not have better guns.
I also had difficulties to see health indicators top screen and spent a lot of time chasing the enemy instead of shooting it.
So there wasn't enough to push me to the end (or trying the endless mode), but overall liked the experience, congrats for pulling this by yourself!