| Progress | Difficulty | Peak |
|---|---|---|
| Vol 1 | 2.28/5 | 4.14/5 |
| Vol 2 | 2.53/5 | 4.21/5 |
| Vol 3 | 2.33/5 | 4.09/5 |
| Vol 4 | 2.47/5 | 4.17/5 |
| Vol 5 | 2.50/5 | 4.14/5 |
| Vol 6 | 2.49/5 | 4.29/5 |
| Vol 7 | 2.42/5 | 4.17/5 |
| Vol 8 | 2.61/5 | 4.29/5 |
| Vol 9 | 2.55/5 | 4.40/5 |
| Vol 10 | 2.32/5 | 4.21/5 |
| Vol 11 | 2.24/5 | 4.12/5 |
| Vol 12 | 2.51/5 | 4.35/5 |
| Vol 13 | 2.50/5 | 4.23/5 |
| Vol 14 | 2.05/5 | 3.67/5 |
| Vol 15 | 2.12/5 | 3.70/5 |
| Vol 16 | 2.09/5 | 3.43/5 |
| Vol 17 | 2.49/5 | 4.21/5 |
| Vol 18 | 2.48/5 | 4.25/5 |
| Overall | 2.39/5 | 4.40/5 |