animated characters, Cuphead and Mugman, cooperative gameplay, online multiplayer, vintage cartoon style, exaggerated expressions, 1930s animation aesthetic, vibrant colors, run and gun action, boss battles, dynamic poses, shooting projectiles, dodging, parrying, retro gaming, whimsical environment, surreal landscapes, inkwell isle, hand-drawn textures, rubber hose limbs, grainy film filter, high contrast lighting, side-scrolling perspective, co-op teamwork, power-ups, collectible coins, challenging difficulty, seamless online connection, iconic finger gun gesture, energetic animation frames, exaggerated smoke effects, classic arcade feel, detailed character design.