Art: 9/10 (I am being a little too much critical here, it is above great!)
Code: 10/10 (can not see flaws, very agile and stable! +there is calibration feature to fix A/V off-sync!)
Enjoyability: 9/10 +consists great humour! (especially check item descriptions!)
Beatmaps: 7/10 (sometimes weaker beats result in two keypress, when the strong one is one key press)
Toughtness if necessary: 10/10 (there are four difficulty settings: easy, medium, hard, spasmodic)
PROTIPS: #1: Use ASDF instead of arrows and numeric keypad 4,6 to rotate and 1,2,3,7,8,9 for spells. Really comfortable! #2: Medium is too easy. #3: Spasmodic difficulty most likely will require playing against easier enemies repetitively in order to level up and beat stronger enemies or to use recipes, because that will help a lot; makes game a little more like RPG because of the repetitions, but that is enjoyable, really. If that is not for you, take hard or normal. When I started with normal and went to 4th floor, I felt it was too easy for me and I went for spasmodic difficulty. I found it really challenging and that is what I really hoped for.