Thanks for the review, you made some good points!
Some of them I was thinking about, but didn't yet implement, for example running; but with showing of hitbox I need to think how to show it nicely, ideally without breaking immersion of medieval feel.
And multiple modes actually weren't that hard - after I parameterized spawning of rats and I was often making it easier to speed run testing of the game, I ended up having more modes - in larger ones rats were faster, more aggressive, and there were more of them. So, quite fun to implement, but we need more playtesting to tune various difficulties to be fun for various types of players.