4)
you should have left bbq at 1 and flamethrower at 5
max moving flamethrower, steyr, laser gun, laser gun charge, lvl 1 punisher, max the lvl 45 skill, leave the 40 skill at 1 or max, the lvl 35 skill 0/1 or max, cancel backstep, quickstanding, max heavy weapon mastery, leave sub weapon crusher at 1, max the buff
otherwise do as you wish