| Progress | Difficulty | Peak |
|---|---|---|
| Vol 1 | 2.77/5 | 4.14/5 |
| Vol 2 | 2.85/5 | 4.19/5 |
| Vol 3 | 3.05/5 | 4.06/5 |
| Vol 4 | 2.88/5 | 4.22/5 |
| Vol 5 | 2.93/5 | 4.20/5 |
| Vol 6 | 2.85/5 | 4.09/5 |
| Vol 7 | 3.20/5 | 4.33/5 |
| Vol 8 | 2.92/5 | 4.22/5 |
| Vol 9 | 2.86/5 | 4.17/5 |
| Vol 10 | 2.93/5 | 4.17/5 |
| Vol 11 | 3.04/5 | 4.25/5 |
| Vol 12 | 2.85/5 | 4.17/5 |
| Vol 13 | 3.03/5 | 4.29/5 |
| Overall | 2.94/5 | 4.33/5 |