tə kəmplˈiːt ˈiːtʃ əv ðə fˈɜːst sˈɛvən stˈeɪdʒᵻz, ðə plˈeɪɚ mˈʌst ɹˈɛskjuː ɐ kˈæptʃɚd kəmˈændoʊ hˌuː wɪl pɹəvˈaɪd ðə ɡɹənˈeɪdz nˈɛsᵻsɚɹi tə blˈoʊ ˌʌp ðɪ əbstɹˈʌkʃən blˈɑːkɪŋ ðɪ ˈɛɡzɪt æt ðɪ ˈɛnd ʌv ˈiːtʃ stˈeɪdʒ ænd ɐdvˈæns ðə plˈɑːt.
To complete each of the first seven stages, the player must rescue a captured commando who will provide the grenades necessary to blow up the obstruction blocking the exit at the end of each stage and advance the plot.