Anything extensively on 1base when you should be on 2base. If 1basing, your limited resources all go towards one attack, or one attack with a small follow up.
If you defend against it, you pretty much win as they sunk all their resources into early low tier army, instead of economic balanced expansion.
If you defend against it, you pretty much win as they sunk all their resources into early low tier army, instead of economic balanced expansion.