| Progress | Difficulty | Peak |
|---|---|---|
| Vol 1 | 2.90/5 | 4.14/5 |
| Vol 2 | 2.97/5 | 4.35/5 |
| Vol 3 | 3.06/5 | 4.36/5 |
| Vol 4 | 2.85/5 | 4.10/5 |
| Vol 5 | 2.92/5 | 4.29/5 |
| Vol 6 | 2.60/5 | 4.17/5 |
| Vol 7 | 2.91/5 | 4.17/5 |
| Vol 8 | 2.50/5 | 3.96/5 |
| Vol 9 | 2.77/5 | 4.13/5 |
| Vol 10 | 2.79/5 | 4.17/5 |
| Vol 11 | 2.63/5 | 4.02/5 |
| Vol 12 | 3.14/5 | 4.35/5 |
| Vol 13 | 2.96/5 | 4.21/5 |
| Vol 14 | 2.68/5 | 4.06/5 |
| Vol 15 | 2.71/5 | 4.08/5 |
| Overall | 2.83/5 | 4.36/5 |