When the Massive Wave on Level 95 comes, as soon as I duck to recharge my gun, I stay crouched and unable to do *anything* as those crazy peaceniks charge and axe/flame/mortar me to death.
I'm fully upgraded with all the peace-keeping goodness I can find in this tiny little trench, and sure like spraying, lobbing, and unleashing peace all over the peace-strewn field.