This was a really really good little game!!
Stylistically I think it worked very well. The level was intuitive and I could feel myself memorizing where certain areas were and what was behind specific doors. Also very cool that there were multiple floors. I liked that all of the tutorial and control text was in the game and easy to see. The slides after entering the gold room and the ending menu were really well done, and I liked that you could donate the coins to charity!
I think all the items in the game were put to good use, potions for health hand orbs for mana. The lockpick pickups came in clutch. And it was nice that the player had to go search for a key to end the game. On the topic of lockpicks it was fun that the system was similar to Bethesda's system for lockpicking in their Fallout and Elder Scrolls games, it felt very intuitive once you realize how it worked. The horse was a fair challenge I feel. There were some good spots to tuck in to avoid it and it never felt too punishing, and I'm happy there were checkpoints.
The overall level of polish was very good. It was nice that ever action and item had sounds, even footsteps! The particle effects, resource gathering, traps, etc. were all implemented without any major bugs. Aside from the occasional glitch with the mouse and player camera.
Overall it's a very well made game with simple but effective gameplay and mechanics, easy to understand direction, and a very good atmosphere. I loved it a lot, this game could even very easily be expanded upon to add even more areas, items, and enemies I think! Would be a very fun time! (bonus points if the knight moved in an L shape like in chess)