Certain weapon(s) will still run out of charge when fired continuously, even after unlocking infinite ammo.
* Inflato-ray is one example... infinite ammo doesn't seem to do anything for this weapon, besides change the charge % counter on the bottom right of the screen to an infinity symbol. If you shoot it continuously, it will run out of charge and need to recharge before shooting again. Dubstep gun seems to be able to fire indefinitely after the infinite ammo unlock for the respective slot, which I assume is how it's meant to work.
* Alien RPG will have the "charging" popup at the center of the screen appear when you shoot it several times in succession, although you never actually need to wait for recharging.
* Inflato-ray is one example... infinite ammo doesn't seem to do anything for this weapon, besides change the charge % counter on the bottom right of the screen to an infinity symbol. If you shoot it continuously, it will run out of charge and need to recharge before shooting again. Dubstep gun seems to be able to fire indefinitely after the infinite ammo unlock for the respective slot, which I assume is how it's meant to work.
* Alien RPG will have the "charging" popup at the center of the screen appear when you shoot it several times in succession, although you never actually need to wait for recharging.