At the beginning of each session, players choose whether to go through the game in one of two modes, "Lonely Wolf" or "Team Battle". In "Lonely Wolf", one character is controlled throughout the game, while "Team Battle" allows selecting a band of three soldiers through their missions, switching between them on-the-fly. Choosing to go it alone gives a higher starting life total, while proceeding as a team will give a wider variety of special weapons as well as a higher starting total (ten for each of the three characters instead of twenty for one).