Phase One could be faster with better RNG into insta-freeze, but both luck and time were not on my side, sadly.
Critical Chance stat used in this video is not optimal for Berthe Raid as I'm currently optimized towards Abyss Raid, please don't copy. Correct Critical Chance for Berthe Raid for Innocent is 56.4% if +11 bottom.

Gear:
+11 Stage 5 [Vestige of Souls - Dual Weapon of Requiem]
+11 Reforge 21 [Tenebrous Top Piece]
+11 Reforge 21 [Amethystine Prophecy - Crimson Bottom Piece]
+11 Reforge 21 [Tenebrous Gloves]
+11 Reforge 21 [Amethystine Prophecy - Crimson Shoes]

Shadow Options - Top Piece:
• All Skills Damage [1.35%]
• Additional Continous Damage over 3 seconds [10%]
• All Skills Damage when Sum of Resistance is over 1.000 [2%]
Shadow Options - Gloves:
• All Skills Damage [1.5%]
• Bravery Skills Damage [10%]
• All Skills Damage when Sum of Resistance is over 1.000 [2%]
Skill Stacks: Rain of Chaos [50%]

ERP:
All Skills Damage [100/100]
Polarize: Attack/Attacked Damage [50/50]
Damage dealt to Boss Monsters [50/50]
Adaptation [100/100]
All Skills Cooldown Reduction [100/100]
Max MP [8/50]

Stats:
Critical Chance [88.2%]
Maximize [73.5%]
Damage dealt to Boss Monsters [179%]
Action Speed [125.1%]
Bravery Skills Cooldown Reduction [32%]