| Progress | Difficulty | Peak |
|---|---|---|
| Vol 1 | 2.06/5 | 4.18/5 |
| Vol 2 | 2.02/5 | 4.06/5 |
| Vol 3 | 2.29/5 | 3.82/5 |
| Vol 4 | 2.26/5 | 4.05/5 |
| Vol 5 | 2.36/5 | 4.02/5 |
| Vol 6 | 2.21/5 | 4.21/5 |
| Vol 7 | 2.34/5 | 3.86/5 |
| Vol 8 | 2.53/5 | 4.24/5 |
| Vol 9 | 2.52/5 | 4.20/5 |
| Vol 10 | 2.36/5 | 3.94/5 |
| Vol 11 | 2.54/5 | 4.28/5 |
| Vol 12 | 2.61/5 | 4.28/5 |
| Vol 13 | 2.42/5 | 3.96/5 |
| Vol 14 | 2.74/5 | 4.40/5 |
| Vol 15 | 2.36/5 | 3.86/5 |
| Vol 16 | 2.64/5 | 4.46/5 |
| Vol 17 | 2.51/5 | 4.29/5 |
| Overall | 2.40/5 | 4.46/5 |