Deeep, deeeeeep insights! Thank you very much for your great ideas!
I hope to add the fast mode as soon as possible. It's definitely on my TO DO list.
Considering builds, your were lucky to find 5 Berserk armors. You played greatly and definitely bought trinkets which increase rarity of symbols or create copies of chosen symbols.
By default, you get access only to 4 legendary chests per one run. 2 of them are in the 3rd (and last) act. So basically you have only 7.43% (3/11 * 3/11) chance to find exactly 2 Berserk armors by the end of Act2. Even in this case your axes deal 3 * 3 * 3 = 27 damage without other modifiers (for other heroes 2 * 3 * 3 = 18). Not so out of touch. Though Berserk Armor is under my sight. It's on the verge to be OP. Long time during the development it only doubled the damage of Axes and Maces. Then I buffed it to 3X.
To be honest, I hate multiplicative modifiers and exponential progression. Although people seem to love big, BIG numbers and broken builds. I personally prefer the progression curve closer to Slay the Spire than Balatro. So I added a lot of multiplicative modifiers but hid them in trinkets or epic and legendary chests. Annihilation of enemies with stupid numbers is possible but only in the Act 3.