Location: Chaotic Realm
Chaos is the true final boss, a multi-stage battle against a monstrous entity in a distorted arena.

- Attacks: Chaos manifests different parts of its body, each with unique attacks:
- Eye: Fires lasers and summons smaller eyes.
- Hand: Swipes across the arena, sometimes grabs Soma.
- Mouth: Spits fireballs or corrosive goo.
- Core: The main target, vulnerable when other parts are destroyed.
- Weakness: Varies by part, but generally physical and elemental attacks are effective.
- Recommended Souls:
- Bullet: Claimh Solais (if acquired), Valmanway (if acquired), or your strongest offensive Bullet Soul (e.g., Minotaur, Witch, Killer Clown).
- Guardian: Bat Soul (for full aerial control), Succubus Soul (for HP recovery), Flame Demon Soul (for defense).
- Enchant: Red Minotaur Soul (STR), Mollusca Soul (INT), or Black Panther Soul (speed).
- Strategy: This is an endurance fight. Chaos has multiple forms/parts. Focus on destroying one part at a time. Use the Bat Soul to fly around the arena and avoid ground-based attacks. The Succubus Soul is invaluable for healing. If you have the Chaos Ring, spam your most powerful Bullet Souls. Learn the attack patterns of each manifested part and exploit any openings. The core is only vulnerable after other parts are destroyed. This is the ultimate test of your accumulated power and skill.
- Reward: True Ending.