Interesting idea to fight without weapons, but using the surrounding objects.
Fork and knife feel too fast, almost impossible to avoid.
But in their levels there is a stone that can be used as a machine gun by spamming E and LMB
Spam of LMB + E also works for big rocks, but only with it speed, not quantity.
I think you can leave it as it is, not everyone would think to use the stone like that.
And you probably have a game dev plan that describe what your future players expect. I just one of them and have very "specific" taste in games :)