| Progress | Difficulty | Peak |
|---|---|---|
| Vol 1 | 3.47/5 | 4.36/5 |
| Vol 2 | 3.41/5 | 4.29/5 |
| Vol 3 | 3.45/5 | 4.24/5 |
| Vol 4 | 3.06/5 | 4.07/5 |
| Vol 5 | 3.44/5 | 4.30/5 |
| Vol 6 | 3.32/5 | 4.21/5 |
| Vol 7 | 3.33/5 | 4.27/5 |
| Vol 8 | 3.18/5 | 4.15/5 |
| Vol 9 | 3.32/5 | 4.26/5 |
| Vol 10 | 3.33/5 | 4.24/5 |
| Vol 11 | 3.24/5 | 4.18/5 |
| Vol 12 | 3.45/5 | 4.32/5 |
| Overall | 3.33/5 | 4.36/5 |