hm. I opened similar bug - now I understand it's about the same issue. So I'm copying its description and attachment here
2 heroes at a team, Blaze and Fassie.
The bug occurs only for Blaze, for his both weapons, from beginning of any Wave and till exiting the game:
- Wave starts
- first 1 or to shots go normal,
- then weapon just stops firing. Electric weapon makes charging/firing sound; light weapon is silent
- swapping weapons doesn't help. Swapping heroes doesn't help
Repro 2 of 2:
- I've managed to complete one Wave with useless Blaze
- restarted the game,
- weapons work!
- faced new Wave,
- the bug reoccurs (and remains after a Wave)
The bug doesn't occur from very beginning of a run. I reached a door that blocks first part of a level without issues. One Blaze's weapon I got from a chest, another from a merchant.
After I use Fassie's active ability (I've only tried this on Blaze) it sets the firerate and damage to negative 100 and 180 percent and doesn't let me shoot with Blaze again. I saw a report for this 8 months ago but is still an issue and don't know how this hasn't been fixed.