| Progress | Difficulty | Peak |
|---|---|---|
| Vol 1 | 2.38/5 | 3.03/5 |
| Vol 2 | 2.39/5 | 3.00/5 |
| Vol 3 | 2.43/5 | 3.12/5 |
| Vol 4 | 2.41/5 | 2.98/5 |
| Vol 5 | 2.37/5 | 3.13/5 |
| Vol 6 | 2.37/5 | 2.86/5 |
| Vol 7 | 2.39/5 | 3.03/5 |
| Vol 8 | 2.37/5 | 2.75/5 |
| Vol 9 | 2.33/5 | 2.83/5 |
| Vol 10 | 2.36/5 | 2.82/5 |
| Vol 11 | 2.36/5 | 2.83/5 |
| Vol 12 | 2.31/5 | 2.76/5 |
| Vol 13 | 2.35/5 | 2.81/5 |
| Vol 14 | 2.35/5 | 2.89/5 |
| Vol 15 | 2.45/5 | 3.38/5 |
| Vol 16 | 2.36/5 | 2.76/5 |
| Vol 17 | 2.19/5 | 2.66/5 |
| Overall | 2.37/5 | 3.38/5 |