"To fight the system" means to resist or challenge the existing rules, institutions, or practices that are perceived as unfair or oppressive in order to bring about change or justice. Full definition
And «running» you say, did he not try to fight the system in the legal and formal matter. (thelunchtray.com)
I liked how the fighting felt... I just hope the new fighting system isn't like all the contemporary fighters out there. (gamespot.com)
There is however some good news for those more in the favor of the traditional turn based fighting system as the game will allow players to pause and set up their strategies during battle. (segmentnext.com)