| Progress | Difficulty | Peak |
|---|---|---|
| Vol 1 | 2.73/5 | 4.37/5 |
| Vol 2 | 2.79/5 | 4.34/5 |
| Vol 3 | 2.74/5 | 4.38/5 |
| Vol 4 | 2.73/5 | 4.44/5 |
| Vol 5 | 2.55/5 | 4.32/5 |
| Vol 6 | 2.76/5 | 4.51/5 |
| Vol 7 | 2.80/5 | 4.55/5 |
| Vol 8 | 3.53/5 | 4.72/5 |
| Vol 9 | 2.86/5 | 4.49/5 |
| Vol 10 | 2.57/5 | 4.45/5 |
| Vol 11 | 2.98/5 | 4.64/5 |
| Vol 12 | 2.35/5 | 3.16/5 |
| Vol 13 | 2.50/5 | 4.26/5 |
| Vol 14 | 2.46/5 | 4.07/5 |
| Vol 15 | 2.81/5 | 4.23/5 |
| Vol 16 | 2.87/5 | 4.46/5 |
| Vol 17 | 2.79/5 | 4.49/5 |
| Vol 18 | 2.96/5 | 4.45/5 |
| Vol 19 | 4.31/5 | 4.83/5 |
| Vol 20 | 3.53/5 | 4.72/5 |
| Vol 21 | 3.12/5 | 4.71/5 |
| Vol 22 | 3.23/5 | 4.69/5 |
| Vol 23 | 3.00/5 | 4.67/5 |
| Overall | 2.87/5 | 4.83/5 |