Thank you for your kind words and feedback.
Yes I will ask the rest of the team if we can add an option for the walking sway, so it is more accessible.
As for the final boss, you can melee with the right mouse button, so you can recover fingers and not spend as much in the early stages. We might also discuss some re-balancing to make it easier to recover fingers, but in principle with the melee attack you should recover them more efficiently.