two characters, Cuphead and Mugman, co-op gameplay, side-by-side, vintage cartoon style, vibrant colors, 1930s animation, run and gun, boss battles, dynamic action, split-screen, shared health bar, retro gaming, cooperative strategy, animated projectiles, whimsical enemies, hand-drawn backgrounds, forest level, platforming, parry mechanic, local multiplayer, vintage controllers, classic sound effects, energetic soundtrack, challenging difficulty, teamwork, fun and frustration, nostalgic atmosphere, seamless integration, joyful chaos.