The game was very immersive, it has a strong sense of atmosphere. I enjoyed the combat and story. A line that extends to show where the arrow will go while the attack is charged, might be nice. Although not knowing can be part of the learning curve. Left shift works well except that sticky keys could get triggered for some people and pull them out of the window. I don't actually know what sticky keys are, I just know that I spammed the dash key and got pulled out of the game window.
Also, the dialogue ran too quickly for me after the character received the power up, so I ended up not knowing some of the controls.
These are all very minor things. I played the game to the end and was a bit sad when it ended. I'm going to follow you and if you add more levels to this I'd like to try them. Thanks.