so, if i equip proxima midnights spea rto the op winter soldier, do i choose the spear´s efect for each atack or only after the second atack???

Neither. You use the RANGE action to do Proxima Midnight’s Spear’s effect -or- to do the effect of Winter Soldier’s power that would make the two attacks. The two effects can not be used together since they both require a RANGE action.

thanks, so how come the defenders7avengers set hawkeye can use it with its special power?

running shot grants a RANGE at no cost. 2 for 1.

i see now, i was reading it bakwards, thanks