| Progress | Difficulty | Peak |
|---|---|---|
| Vol 1 | 3.27/5 | 4.28/5 |
| Vol 2 | 3.29/5 | 4.18/5 |
| Vol 3 | 3.12/5 | 4.24/5 |
| Vol 4 | 3.23/5 | 4.24/5 |
| Vol 5 | 2.98/5 | 4.13/5 |
| Vol 6 | 3.08/5 | 4.12/5 |
| Vol 7 | 3.15/5 | 4.25/5 |
| Vol 8 | 3.27/5 | 4.37/5 |
| Vol 9 | 3.38/5 | 4.36/5 |
| Vol 10 | 3.21/5 | 4.30/5 |
| Vol 11 | 3.48/5 | 4.43/5 |
| Vol 12 | 3.09/5 | 4.15/5 |
| Vol 13 | 3.02/5 | 4.26/5 |
| Vol 14 | 3.23/5 | 4.39/5 |
| Vol 15 | 2.88/5 | 4.14/5 |
| Vol 16 | 3.21/5 | 4.34/5 |
| Vol 17 | 3.51/5 | 4.45/5 |
| Overall | 3.20/5 | 4.45/5 |