▁criminal ▁gang ▁of ▁dogs ▁that ▁has ▁taken ▁over ▁the ▁city . ▁ ▁Plot ▁The ▁player ▁takes ▁control ▁of ▁Wil ly , ▁a ▁rising ▁young ▁jazz ▁cat ▁in ▁New ▁York ▁City ▁who ▁goes ▁by ▁the ▁stage ▁name ▁of ▁" The ▁Rock in ' ▁Kat ." ▁ ▁However , ▁the ▁local ▁crime ▁b oss , ▁M ugs y , ▁kid n aps ▁Wil ly ' s ▁girl friend , ▁J ill . ▁To ▁rescue ▁J ill ▁and ▁defeat ▁the ▁gang ster , ▁Wil ly ▁must ▁vent ure ▁through ▁seven ▁different ▁levels ▁or ▁" ch annels " ▁( from ▁a ▁television ▁set ) ▁that ▁feature ▁various ▁them es , ▁th ugs ▁and ▁b oss es . ▁ ▁Game play ▁ ▁Wil ly ▁is ▁armed ▁with ▁a ▁p unch ▁gun , ▁that ▁he ▁can ▁launch ▁at ▁the ▁various ▁th ugs , ▁or ▁to ▁hook ▁onto ▁and ▁swing ▁from . ▁Wil ly ▁can ▁also ▁use ▁the ▁p unch ▁gun ▁to ▁grab ▁and ▁throw ▁certain ▁objects . ▁ ▁Master ing ▁the ▁p unch ▁gun ▁is ▁critical ▁to ▁the ▁player ' s ▁success ▁in ▁the ▁game . ▁ ▁There ▁are ▁a ▁total ▁of ▁five ▁stages . ▁The ▁first ▁four ▁stages ▁can ▁be ▁played ▁in ▁any ▁order ▁and ▁are ▁selected ▁at ▁the ▁start ▁of ▁the ▁game ▁as ▁" ch annels " ▁on ▁a ▁TV ▁monitor . ▁The ▁fifth ▁and ▁final ▁stage ▁or ▁" channel " ▁becomes ▁available ▁only ▁after ▁the ▁other ▁four ▁have ▁been ▁be aten . ▁The ▁levels ▁include ▁a ▁car n ival , ▁a ▁flight ▁at op ▁a ▁moving