The no tough rule was a lil hard to fight because of what you said a lot of factions will be hard here. As the attacker you get several advantages you will be able to pick enemy units off if you can manage to break them in one attack. Raise the alarm works in that you may take any action Hold, Rush, Advance even Charge( although that would not be recommended) and instead of shooting or melee attacks you may raise the alarm (spend time calling in the attack). Stipulations is that they need to have taken a wound this round or they are within 9" of a enemy.