2D animated characters, Cuphead and Mugman, cooperative gameplay, side-scrolling action, vintage cartoon style, vibrant colors, hand-drawn textures, rubber hose animation, boss battles, run and gun, retro gaming, dynamic duo, teamwork, split-screen, shared health bar, vintage film grain, whimsical music, challenging platformer, seamless integration, local multiplayer, vintage microphone, classic arcade, whimsical environment, 1930s aesthetic, high contrast lighting, exaggerated expressions, co-op mode, iconic finger gun shooting, parry mechanic, strategic gameplay, power-ups, collectible coins, upgrade abilities, cartoon violence, whimsical bosses, unique attack patterns.