Tatsuya would draw out his gun, blasting wildly at the shackles while they form. A barrage of magical homing bullets rushing towards them and dealing out just enough impact to slow them down slightly.
He'd run like a man posessed, slightly inhuman prowess from both years of keeping up with demons and his Persona carrying the old warrior forward just barely fast enough to evade the chains. It's close, but he manages i-... Only to have one of them grab onto his left side.
Only half in its range for now though, and with the last few seconds before he's pulled into the void the man would raise up his Evoker to his head with a grim smile on his face.
"Seems as though you got me, but not quite well enough to stop this. You've won PK, but I won't let you win without dying at least once. Sorry."
As he says that Lucifer would reform behind him, this time with the form of another Persona appearing as well... The red eyed white fallen angel, and a dark-grey figure with chains on his hands and mouth. Covered in scales with a wide open mouth and seemingly no eyes.
"Lucifer, Satan, Final Armageddon!"
By this point the chains would be pulling Tatsuya in despite his best efforts, that's fine though. Because the ungodly flow of magic that's more powerful than anything else he's ever done is moving so fast it won't be stopped. Not soon enough anyway.
The two Personas would fly high above the battle field, cracking and seemingly bleeding some black ooze not unlike the wounds of a Shadow. The power being used here is so overwhelming it's probably Tatsuya's own life force along with all his magic.
A fact that becomes all the more obvious as the unstoppable almightly energy of the attack rushes down from above. It doesn't just ungulf the whole battlefield, it engulfs everything in the room all at once. Raw magical energy that simply tears through any defense short of a god's own power coming to life and taking the shape of a nuclear mushroom cloud just blasting through the entire area and turning everything to dust.
It's probably overkill, if he were going to fight much longer this would leave Tatsuya at a massive disadvantage... But those chains sealed his doom anyway, and as the man's almost lifeless body is dragged into the void he'd just smirk slightly. PK may or or may not see it given he's probably being torn apart right now.
The Danksuyas oddly are not getting torn apart, somehow stopped by an odd quirk of the magic which focuses the blast in on PK despite engulfing the area in light. And the Demon Hunter offers his foe a smile and thumbs up before vanishing into the void, presumably to die. Unlike his enemy, he won't be coming back either.
Battle Over