| Progress | Difficulty | Peak |
|---|---|---|
| Vol 1 | 2.51/5 | 4.25/5 |
| Vol 2 | 2.60/5 | 4.14/5 |
| Vol 3 | 2.54/5 | 4.09/5 |
| Vol 4 | 2.54/5 | 3.89/5 |
| Vol 5 | 2.58/5 | 4.06/5 |
| Vol 6 | 2.58/5 | 4.21/5 |
| Vol 7 | 2.63/5 | 3.95/5 |
| Vol 8 | 2.56/5 | 4.28/5 |
| Vol 9 | 2.62/5 | 4.25/5 |
| Vol 10 | 2.49/5 | 3.83/5 |
| Vol 11 | 2.65/5 | 4.21/5 |
| Vol 12 | 2.62/5 | 4.03/5 |
| Vol 13 | 2.56/5 | 4.00/5 |
| Vol 14 | 2.67/5 | 4.17/5 |
| Vol 15 | 2.53/5 | 4.06/5 |
| Vol 16 | 2.60/5 | 4.25/5 |
| Vol 17 | 2.53/5 | 3.74/5 |
| Vol 18 | 2.69/5 | 4.19/5 |
| Vol 19 | 2.72/5 | 4.22/5 |
| Vol 20 | 2.62/5 | 3.91/5 |
| Vol 21 | 2.66/5 | 3.97/5 |
| Vol 22 | 2.39/5 | 3.45/5 |
| Overall | 2.59/5 | 4.28/5 |