Normally for just hitting the bosses, I’d say you dont need much crit chance as eventually you’re gonna hit a deadly strike anyway, so better to have a second 225% crit dmg
For my floor hiking build (after patch of crushing flames, I’ll explain how this was patched at the end)
I use Crushing Flames(5) - not 6
With Frozen(5) and Electrocution(5) and the general idea is to crush the minions below 25% health for execute damage (Stheno OH works great),
-if you’re using crit in this build, make sure your chance is high
The MH (ice) has as much base damage from WD% and WD+
The OH (fire) has as little base damage as possible to prevent accidentally killing the enemy with the wrong element
The Hireling (Shock) just deals as little damage as possible, you just want the stacks for Electrocution
Then just as much Ice dmg% and Frostbiting% as possible for Frozen
This build has worked for me up to around floor 6300
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As for the Crushing Flames and Frozen ‘patch’
You can’t straight up kill an enemy with Crushing Flames(6), it just goes to 1 hp, and then the next attack kills them
Thats why i use only (5): to leave room for setting up the kills