, ▁while ▁it ▁received ▁criticism ▁for ▁lack ▁of ▁music ▁during ▁game play ▁on ▁the ▁cart ridge ▁version . ▁It ▁has ▁been ▁referred ▁by ▁publications ▁such ▁as ▁Ret ro ▁G amer ▁as ▁one ▁of ▁the ▁best ▁titles ▁for ▁each ▁platform . ▁A ▁sequ el , ▁Iron ▁Sold ier ▁ 3 , ▁which ▁was ▁released ▁in ▁ 2 0 0 0 ▁for ▁the ▁Play Station ▁and ▁in ▁ 2 0 0 1 ▁for ▁the ▁Nu on ▁respectively . ▁ ▁Game play ▁▁ ▁Iron ▁Sold ier ▁ 2 ▁is ▁a ▁me ch ▁simulation ▁game ▁with ▁free - ro aming ▁elements ▁that ▁is ▁primarily ▁played ▁in ▁a ▁first - person ▁perspective ▁like ▁its ▁prede cess or . ▁The ▁player ▁takes ▁control ▁of ▁the ▁tit ular ▁robot ▁across ▁ 2 0 ▁miss ions , ▁each ▁one ▁varying ▁in ▁main ▁object ives ▁to ▁complete ▁such ▁as ▁acqu iring ▁new ▁weapons ▁and ▁fighting ▁against ▁other ▁Iron ▁Sold ier ▁units , ▁in ▁order ▁to ▁stop ▁attacks ▁from ▁P ENT A ▁corpor ation ▁against ▁the ▁United ▁Republic . ▁The ▁progress ▁system ▁acts ▁similarly ▁to ▁the ▁original ▁game , ▁where ▁the ▁first ▁set ▁of ▁five ▁miss ions ▁must ▁be ▁completed ▁in ▁order ▁to ▁un lock ▁another ▁set . ▁The ▁player ▁now ▁starts ▁with ▁three ▁select able ▁weapons ▁instead ▁of ▁only ▁one ▁and ▁controls ▁are ▁relatively ▁the ▁same ▁as ▁with ▁the ▁first ▁game . ▁In ▁addition ▁to ▁the ▁returning ▁enemy ▁units ▁from ▁the ▁original ▁game , ▁new ▁ones ▁are ▁introduced ▁in ▁the ▁sequ el ▁such ▁as ▁walk er - like ▁vehicles . ▁Though ▁progress