checked-no =>Cheat Codes: Enter these codes on the title screen. If you want both, enter the invulnerability code first. * Invulnerability: Press U D D L R L U U. * Stage Select: Press L R U U D U R L. =>Rapid Fire Gun: There is a rapid fire gun hidden in level four. Stand on the diagonal platform and press A repeatedly to stay there long enough to find the gun.