accept ambush assail assault assume attack attempt blitz buckle to bushwhack come at come down on crack down on descend on descend upon dive into draw first blood embark in embark upon endeavor engage in enter on enter upon fall into fall on fall to fall upon gang up on get busy get cracking get going get under way get with it go about go at go for go in for go into go to it go upon harry have at hit hit like lightning hop to it jump jump to it land on launch forth launch into lay about lay about one lay at lay hands on lay into lay on light into make war on move into mug pitch in plunge into pounce upon pound proceed to sail into set about set at set forward set going set on set to set to work set upon square up start in strike surprise swoop down on tackle take on take the offensive take up turn to undertake venture upon wade into