| Progress | Difficulty | Peak |
|---|---|---|
| Vol 1 | 2.54/5 | 4.19/5 |
| Vol 2 | 2.55/5 | 4.23/5 |
| Vol 3 | 2.46/5 | 4.09/5 |
| Vol 4 | 2.60/5 | 4.36/5 |
| Vol 5 | 2.59/5 | 4.30/5 |
| Vol 6 | 2.66/5 | 4.25/5 |
| Vol 7 | 2.37/5 | 4.12/5 |
| Vol 8 | 2.43/5 | 4.23/5 |
| Vol 9 | 2.60/5 | 4.17/5 |
| Vol 10 | 2.69/5 | 4.35/5 |
| Vol 11 | 2.61/5 | 4.27/5 |
| Vol 12 | 2.56/5 | 4.32/5 |
| Vol 13 | 2.49/5 | 4.14/5 |
| Vol 14 | 2.81/5 | 4.46/5 |
| Vol 15 | 2.43/5 | 4.23/5 |
| Vol 16 | 2.60/5 | 4.38/5 |
| Vol 17 | 2.57/5 | 4.23/5 |
| Vol 18 | 2.56/5 | 4.21/5 |
| Vol 19 | 2.53/5 | 4.30/5 |
| Vol 20 | 2.62/5 | 4.29/5 |
| Vol 21 | 2.59/5 | 4.35/5 |
| Vol 22 | 2.73/5 | 4.29/5 |
| Vol 23 | 3.05/5 | 4.35/5 |
| Vol 24 | 2.91/5 | 4.48/5 |
| Overall | 2.61/5 | 4.48/5 |