Chaos acquire the power of all 7 Chaos Emeralds and get's it's dreamed God Like Powers. He then starts raiding Earth completely by surprise. S.H.I.E.L.D underestimate the beast and summon The Avengers and it's remaining forces to save Earth for the angry god. Who wins?
By absorbing all of the negative Chaos Energy from the seven Chaos Emeralds, Perfect Chaos obtains unprecedented size and power on a god-like scale, which is said can easily lay waste to the entire world.
In this form, Chaos' hydrokinetic powers have been enhanced to the point where it has total control over water and can control entire floods, such as when Perfect Chaos floods Station Square with ease in a matter of seconds with colossal tidal waves
Perfect Chaos also posses extremely powerful energy projections. Which destroyed Egg man Super Carrier with one strike and even damaged Super Sonic. Also, due to its incredible size, Perfect Chaos has enormous amounts of physical strength and can destroy entire buildings with just one strike with its tentacles. He's also immune to any conventional weaponry.