| Progress | Difficulty | Peak |
|---|---|---|
| Vol 1 | 4.01/5 | 4.61/5 |
| Vol 2 | 3.44/5 | 4.56/5 |
| Vol 3 | 3.64/5 | 4.55/5 |
| Vol 4 | 3.00/5 | 4.52/5 |
| Vol 5 | 2.88/5 | 4.49/5 |
| Vol 6 | 3.79/5 | 4.58/5 |
| Vol 7 | 2.86/5 | 4.46/5 |
| Vol 8 | 3.15/5 | 4.52/5 |
| Vol 9 | 2.67/5 | 4.44/5 |
| Vol 10 | 2.88/5 | 4.44/5 |
| Vol 11 | 3.30/5 | 4.57/5 |
| Vol 12 | 2.95/5 | 4.54/5 |
| Vol 13 | 4.13/5 | 4.65/5 |
| Vol 14 | 2.91/5 | 4.53/5 |
| Vol 15 | 4.08/5 | 4.63/5 |
| Overall | 3.31/5 | 4.65/5 |