The visuals felt very consistent and polished. Great work! The character motion was nice and fluid. The knights seem like they have a big reach and I think that contributed to the challenge of the game in a good way, but it didn't feel too difficult with the cooldown in their attacks.
Two things I noticed: (1) The hit boxes (or whatever your check is) for the peasants seem like they could be a little bigger? I often would be surprised that I didn't kill them. (2) I adopted some strategy of jumping over the knights and backstabbing them, but it seemed like they still hit me even though the character didn't make any sound nor did their sprite touch my sprite?
Overall, brings me back to playing fun and simple games on Newgrounds years ago :)