animated characters, Cuphead and Mugman, cooperative gameplay, online multiplayer, vintage cartoon style, exaggerated expressions, 1930s animation aesthetic, vibrant colors, run and gun action, dynamic poses, shooting projectiles, dodging enemies, boss battle, whimsical environment, surreal landscapes, high-energy, rubber hose limbs, inkwell island, cross-platform play, seamless integration, interactive background, 2D side-scrolling, retro gaming, detailed textures, soft lighting, split-screen view, exaggerated smoke effects, co-op teamwork, exaggerated finger guns, iconic costumes, clear visual cues, fast-paced, energetic soundtrack, exaggerated facial features.