I should really be sleeping but...
(I know this isn't quite what you asked for but the muse does what it wants)
HE DOESN'T DO TOURNAMENTS
"Seriously, Orion, you're a genius at this game, why won't you ever compete? I bet you could beat every single world champion with a 500pt handicap."
"Sorry, Pamela, it's... personal reasons."
BUT THE GALAXY MAY NOT LET HIM
"On behalf of the Runious Powers, I, Abaddon, declare that the tournament is open! Champions of Chaos, assemble! For the prize is naught but the the future of mankind!"
FOR TO PROTECT HUMANITY
"My name is Zerayah Cain. Orion Rieper, I challenge you!"
HE HAS TO CONFRONT HIS PAST
"Lord Liberator... I must confess. I came to this world to kill you. I can't be the Slawkenberg representative!"
"Orion, frankly, you aren't the first to do so I've entrusted humanity's fate with. And now, you have a reason to protect this world, right? You've bested me, so even if you don't believe in yourself, believe in the me who believes in you, Champion of Slawkenberg."
AND WHILE ONE
"What? The Panacea should not have a Warp-imprint!"
"For a normal Chaos player, perhaps, but I am a citizen of Slawkenberg! The Liberator's fight to save all life thrums within our hearts! My Magos Biologis uses the Panacea Injector on your Great Unclean One!"
SHALL RISE
"Is this all Desire can give you, Emperor's Children? Do you remember love?"
ANOTHER
"Tannenburg, don't do this! The way you're playing... your soul will be lost to the Emperor!"
"Don't lecture me, Phrecht. Your halfhearted way of playing will lose us this tournament. My Lord of Skulls fires his Skull Hurler at your Seercult!"
SHALL FALL
"Rejoice, Tannenburg. You have triumphed over me. I, Kor Phaeron, welcome your ascent."
FOR THIS IS
"Inquisitor Tannenburg. We meet once again."
"47. Not only have you betrayed me and the Emperor, you now seek to impede my path?"
THE WORKSHOP GAMES
Coming never