That's pretty fair criticism. The idea is to join together the different attachments to do better damage against specific enemies, which are color coded to the corresponding attachments. There is actually a difference in damage done, whether you actually notice it or not. We had a lot of stuff on our plate, so gameplay balancing was sadly sacrificed to get anything playable at all and it sucks it came to this.
I'm aware of the audio stuff. I noticed only after submission what exactly went wrong there.
But other than that, thanks for playing!