| Progress | Difficulty | Peak |
|---|---|---|
| Vol 1 | 3.11/5 | 4.34/5 |
| Vol 2 | 3.21/5 | 4.53/5 |
| Vol 3 | 2.94/5 | 4.18/5 |
| Vol 4 | 3.15/5 | 4.34/5 |
| Vol 5 | 3.00/5 | 4.43/5 |
| Vol 6 | 3.10/5 | 4.26/5 |
| Vol 7 | 3.05/5 | 4.26/5 |
| Vol 8 | 3.11/5 | 4.26/5 |
| Vol 9 | 3.05/5 | 4.11/5 |
| Vol 10 | 3.10/5 | 4.30/5 |
| Vol 11 | 2.80/5 | 3.99/5 |
| Vol 12 | 3.08/5 | 4.30/5 |
| Vol 13 | 3.29/5 | 4.45/5 |
| Vol 14 | 3.04/5 | 4.13/5 |
| Vol 15 | 3.37/5 | 4.43/5 |
| Vol 16 | 3.08/5 | 4.05/5 |
| Vol 17 | 2.83/5 | 3.91/5 |
| Vol 18 | 3.25/5 | 4.32/5 |
| Vol 19 | 3.08/5 | 4.35/5 |
| Vol 20 | 3.04/5 | 4.18/5 |
| Overall | 3.08/5 | 4.53/5 |