the delay is only on machine gun, what i mean is it getting shorter when you upgrade the fire rate, normally it's about half a second but with four or more upgrade its about an eighth of a second, so while its still there, its much, much, shorter.
sad you wont add anything new, but understandable.
and about the dog food: its not spawning, the challenge appears as completed in the game menu from the start, but the challenge book confirms it isn't completed and the dog food doesn't appear in normal games so its not unlocked.
what is it even supposed to do?