| Progress | Difficulty | Peak |
|---|---|---|
| Vol 1 | 3.50/5 | 4.52/5 |
| Vol 2 | 4.04/5 | 4.62/5 |
| Vol 3 | 3.95/5 | 4.59/5 |
| Vol 4 | 4.12/5 | 4.65/5 |
| Vol 5 | 4.05/5 | 4.62/5 |
| Vol 6 | 4.12/5 | 4.65/5 |
| Vol 7 | 4.14/5 | 4.66/5 |
| Vol 8 | 4.09/5 | 4.63/5 |
| Vol 9 | 3.83/5 | 4.59/5 |
| Vol 10 | 3.85/5 | 4.58/5 |
| Vol 11 | 3.29/5 | 4.52/5 |
| Vol 12 | 4.00/5 | 4.60/5 |
| Overall | 3.92/5 | 4.66/5 |