| Progress | Difficulty | Peak |
|---|---|---|
| Vol 1 | 3.14/5 | 4.12/5 |
| Vol 2 | 3.04/5 | 3.83/5 |
| Vol 3 | 3.14/5 | 3.81/5 |
| Vol 4 | 3.12/5 | 3.89/5 |
| Vol 5 | 2.69/5 | 3.79/5 |
| Vol 6 | 3.03/5 | 3.84/5 |
| Vol 7 | 3.11/5 | 3.87/5 |
| Vol 8 | 3.15/5 | 3.90/5 |
| Vol 9 | 3.00/5 | 3.88/5 |
| Vol 10 | 2.92/5 | 3.81/5 |
| Vol 11 | 3.02/5 | 3.89/5 |
| Vol 12 | 3.03/5 | 3.81/5 |
| Vol 13 | 3.33/5 | 3.93/5 |
| Vol 14 | 3.13/5 | 3.87/5 |
| Vol 15 | 3.20/5 | 3.98/5 |
| Overall | 3.06/5 | 4.12/5 |