▁after ▁comple ting ▁five ▁miss ions ▁and ▁other ▁setting ▁changes ▁are ▁kept ▁automatically ▁via ▁the ▁internal ▁E EP ROM ▁on ▁the ▁cart ridge ▁version , ▁a ▁Memory ▁Track ▁cart ridge ▁must ▁be ▁present ▁on ▁the ▁CD ▁version ▁in ▁order ▁to ▁save ▁progress ▁and ▁settings . ▁ ▁Plot ▁ ▁After ▁the ▁defeat ▁of ▁Iron ▁F ist ▁Corporation , ▁the ▁Res istance ▁formed ▁a ▁dem ocr atic ▁government ▁called ▁United ▁Republic . ▁However , ▁problems ▁begin ▁to ▁arise ▁when ▁the ▁P ENT A ▁corpor ation , ▁a ▁long time ▁rival ▁of ▁Iron ▁F ist , ▁are ▁occup ying ▁areas ▁from ▁their ▁former ▁enemy ▁and ▁starts ▁attack ing ▁the ▁newly ▁formed ▁republic . ▁As ▁a ▁result , ▁a ▁pilot ▁from ▁the ▁defense ▁force ▁of ▁the ▁republic ▁is ▁assigned ▁to ▁take ▁control ▁of ▁an ▁Iron ▁Sold ier ▁unit ▁in ▁order ▁to ▁defend ▁republic an ▁territ ories ▁against ▁terror ist ▁attacks ▁from ▁P ENT A . ▁ ▁Development ▁and ▁release ▁▁ ▁At ari ▁Corporation ▁requested ▁Marc ▁Ros och a ▁and ▁his ▁team ▁at ▁Eclipse ▁Software ▁Design ▁to ▁start ▁work ▁on ▁a ▁sequ el ▁to ▁Iron ▁Sold ier ▁for ▁the ▁At ari ▁J agu ar ▁CD ▁shortly ▁after ▁the ▁game ▁was ▁released ▁on ▁the ▁J agu ar . ▁Development ▁began ▁after ▁Eclipse ▁obtained ▁development ▁k its ▁for ▁the ▁J agu ar ▁CD ▁from ▁At ari ▁Cor p ., ▁who ▁were ▁looking ▁to ▁publish ▁" k iller ▁app " ▁titles ▁for ▁the ▁peri pher al . ▁Ros och a ▁stated ▁that ▁Iron ▁Sold ier ▁ 2 ▁would ▁have ▁been ▁completed