| Progress | Difficulty | Peak |
|---|---|---|
| Vol 1 | 3.07/5 | 4.08/5 |
| Vol 2 | 3.25/5 | 4.20/5 |
| Vol 3 | 3.30/5 | 4.27/5 |
| Vol 4 | 3.03/5 | 3.86/5 |
| Vol 5 | 3.24/5 | 4.06/5 |
| Vol 6 | 3.49/5 | 4.35/5 |
| Vol 7 | 3.23/5 | 4.02/5 |
| Vol 8 | 3.36/5 | 4.03/5 |
| Vol 9 | 3.41/5 | 4.30/5 |
| Vol 10 | 3.11/5 | 3.97/5 |
| Vol 11 | 3.46/5 | 4.30/5 |
| Vol 12 | 3.56/5 | 4.36/5 |
| Vol 13 | 3.59/5 | 4.40/5 |
| Vol 14 | 3.26/5 | 4.21/5 |
| Overall | 3.31/5 | 4.40/5 |