I think it's gonna be like this

\- P-1 was just a boss

\- P-2 was a gauntlet and then a boss

\- P-3 is going to be a gauntlet, a boss, and then another boss

Imagine: as you progress through the level you face dozens of angel enemies that are running deeper and deeper to the end of the level, but they aren't running from you, they are running to where the prime soul is because it's about to escape and heaven is sending all of its army to stop it. Near the end of the gauntlet a lot of providences and virtues ambush you but after you kill 2 or 3 of them, Ulysses prime appears and kills all the enemies on the spot, starting his bossfight.

His health bar is magenta (basically 3 phases) and after hundreds of tries you finally manage to kill him and get to the level elevator, but something is wrong, your score and rank look weird, almost like if you missed a big part of the level, then, the screen shakes violently and after a few seconds the elevator snaps in half making you fall into the deepest part of hell itself.

You just proceed as always, fighting more and more angelical foes + whatever horrors live in that cold abyss, and slowly you start realizing the army of heaven wasn't trying to contain Ulysses, they were sending everyone to contain something or SOMEONE far worse.

After ultrakilling hundreds of enemies, you finally reach the deepest pit of the inferno just to find Michael, Raphael, and Phanuel standing over a giant lake of frozen blood, ready to tear you apart.

Michael, god's wisdom, ambushes you with extremely fast but "weak" attacks.

Phanuel, god's patience, stays far away, summoning proyectiles and almost every ranged attack you have faced before.

Raphael, god's strength, charges at you with his bare fists, throwing really slow melee attacks with devastating damage.

After Michael is defeated, the frozen lake starts to crack. When Phanuel perishes by your hands, ice and rock begin falling from above, hurting anyone unfortunate enough to be hit by the debris and cracking the ice below you even more. The moment Raphael faces his final demise, geysers of boiling blood start raising from the lake.

After you kill the three of them, the one they were trying to seal rises from the now shattered frozen lake. It's colossal form is like an angel, but rotten and unholy.

As always, you kill it, like everything else you have faced, but after the body of the giant fallen angel explodes in a rain of blood, an ominous glowing orb starts forming from the corpse, and slowly starts resembling a humanoid form...

\*I AM FREE NOW, FATHER, AND AFTER THIS VILE CREATION OF MANKIND PERISHES BY MY HAND, I WILL FIND YOU, AND I SHALL TAKE VENGEANCE IN THE NAME OF YOUR UNFAIRLY DAMNED CHILDREN\*

PRIME /// THIRD: LIGHT BRINGER, NOT HIS KINDNESS ANYMORE

My idea of what P-3 could be (Theory/stupidassfanfic)