Reminds me of old text based adventure games, cool concept. The pixel art is cute, I couldn't get past the knight, the restart button didn't work either. I think the game would benefit from maybe giving the player more hints on what specific words to use or add more actions to the whitelist, I feel like commands such as (strike knight) or fight knight should at least give a hint on why they won't work and steer the player in the right direction.
Ambitious game, and nice job implementing the theme!