Hi!
First, yes I would like to check that VOD if possible please.
Great that you felt the "sheer insanity" aspect, that was something I was aiming at!
As for how well you need to learn the enemy tactics, it shouldn't be necessary to do so too much for the normal and lower difficulties. As you said, memorizing the details should allow you to take enemies out faster, but there should be a nice room for error and still be able to win. In particular since resources are limited and you can permanently lose party members along their equipment, I tried to give enough "spare" resources so that the player can experiment and fail and still succeed (just not grind everything to max level/farm money for all the best gear beforehand). Plus there should be ways to peacefully deal with each boss as a last resort.
Still I agree there should be some slower more detailed tutorials, it was something suggested in the previous jam, and something I'm planning how to better implement. My current idea is some classes at the Sword School before it gets attacked at the start of the game that cover the combat's mechanics bit by bit with pratice battle, each skippable.
Thanks for the critique and hope you can cover more later!