Thank you for the feedback. I understand the menu not working correctly once after dying I myself encountered that bug and so far I have not been able to fix it.
The shooting rate depends on the movement of the player you have to keep moving in order too keep the fire rate high.
The momentum is the depleting bar down in the middle of the screen once it's depleted you should not be able to move and you can gain momentum by picking up "+20" droped by destroyed tanks but if the momentum is completely depleted only way to keep playing is buying momentum from the SHOP[P].
I have not encountered the bug where the player would stop moving and only strafe left and right. Could you give more information on that mayble like a video.
