Saw other comments and tried Assassin's Dagger + Hercule Pavise. It's insanely overpower.
Floor 162 and still going strong, killing most of the enemy groups in the first turn and none have survived the second turn. But combats have become too laggy for me to want to continue anymore. Oh well.
First turn damage 186k+ total
Could've scaled even more if Gold replaced with another Crimson Energy.
Also the kill count on the dagger has glitched.