Warning: it's much weaker than Raekor or MOTE at the moment.
As you can see in the video, he got a GG rift and mobs (Floor 1 Spire with fatties, zombies, summoners, and thralls, Floor 2 and with same mobs on Crater, and decent floor 3 Realmwalker), a very good Conduit pylon. He made 80%+ of his progress on Floor 1 and actually lost time on Floors 2, and 3 due to some bad mob affixes. RG was Crusader King, an easy win (though not the ideal RG). He would improve his damage by swapping Taeguk for Trapped and using Diamonds in gear. He's also got 100+ augments on everything (23k+ main stat), so gear and gems aren't a problem for him.