I have recently heard a rumor that Valve is currently working on new weapons and achievments for the Engie.  I am curious if this rumor is true or if anyone else has heard any new about it. Also, why didnt they make new weapons or give achievments for the Engineer?

I Think the reason they didnt was because the engineer is already one of the most powerful classes in the game and if used correctly, can easily make life hell for the other team. As to why they didnt give him achievments i have no idea.