| Progress | Difficulty | Peak |
|---|---|---|
| Vol 1 | 3.45/5 | 4.16/5 |
| Vol 2 | 3.54/5 | 4.28/5 |
| Vol 3 | 3.41/5 | 4.20/5 |
| Vol 4 | 3.42/5 | 4.12/5 |
| Vol 5 | 3.49/5 | 4.21/5 |
| Vol 6 | 3.35/5 | 4.09/5 |
| Vol 7 | 3.43/5 | 4.23/5 |
| Vol 8 | 3.42/5 | 4.27/5 |
| Vol 9 | 3.43/5 | 4.14/5 |
| Vol 10 | 3.50/5 | 4.31/5 |
| Vol 11 | 3.66/5 | 4.43/5 |
| Vol 12 | 3.64/5 | 4.41/5 |
| Vol 13 | 3.43/5 | 4.20/5 |
| Vol 14 | 3.48/5 | 4.29/5 |
| Vol 15 | 3.53/5 | 4.35/5 |
| Overall | 3.48/5 | 4.43/5 |