I really liked the grandness of the levels! It was neat to explore the castle!
One thing I found a bit difficult was that you'd fire in the direction you were walking, which made aiming a bit harder, but it was manageable! I also had a hard time predicting when spikes would pop up, I think it'd be neat if they would show the tips of the spikes for a bit before shooting up. Something like with the turrets flashing before shooting, I thought that was a good indicator that it was going to attack
Besides that, I enjoyed it, I couldn't fully understand what the voice line at the end was but it was a neat surprise!