| Progress | Difficulty | Peak |
|---|---|---|
| Vol 1 | 3.09/5 | 4.06/5 |
| Vol 2 | 3.07/5 | 4.14/5 |
| Vol 3 | 3.50/5 | 4.36/5 |
| Vol 4 | 2.97/5 | 3.87/5 |
| Vol 5 | 2.79/5 | 4.06/5 |
| Vol 6 | 3.56/5 | 4.35/5 |
| Vol 7 | 3.11/5 | 4.21/5 |
| Vol 8 | 3.43/5 | 4.33/5 |
| Vol 9 | 3.41/5 | 4.29/5 |
| Vol 10 | 3.61/5 | 4.38/5 |
| Vol 11 | 3.78/5 | 4.43/5 |
| Vol 12 | 3.05/5 | 4.18/5 |
| Vol 13 | 2.91/5 | 4.09/5 |
| Overall | 3.26/5 | 4.22/5 |