| Progress | Difficulty | Peak |
|---|---|---|
| Vol 1 | 2.71/5 | 4.45/5 |
| Vol 2 | 2.46/5 | 4.32/5 |
| Vol 3 | 2.39/5 | 4.27/5 |
| Vol 4 | 2.68/5 | 4.39/5 |
| Vol 5 | 2.51/5 | 4.35/5 |
| Vol 6 | 3.00/5 | 4.53/5 |
| Vol 7 | 2.89/5 | 4.47/5 |
| Vol 8 | 2.31/5 | 4.19/5 |
| Vol 9 | 2.45/5 | 4.30/5 |
| Vol 10 | 2.70/5 | 4.39/5 |
| Vol 11 | 2.69/5 | 4.43/5 |
| Vol 12 | 2.79/5 | 4.43/5 |
| Vol 13 | 2.52/5 | 4.29/5 |
| Vol 14 | 2.94/5 | 4.49/5 |
| Vol 15 | 2.84/5 | 4.46/5 |
| Vol 16 | 2.76/5 | 4.47/5 |
| Vol 17 | 2.62/5 | 4.36/5 |
| Vol 18 | 2.70/5 | 4.40/5 |
| Vol 19 | 2.39/5 | 4.28/5 |
| Vol 20 | 2.67/5 | 4.35/5 |
| Vol 21 | 3.15/5 | 4.43/5 |
| Vol 22 | 2.78/5 | 4.42/5 |
| Vol 23 | 2.74/5 | 4.47/5 |
| Vol 24 | 2.96/5 | 4.49/5 |
| Overall | 2.69/5 | 4.53/5 |