| Progress | Difficulty | Peak |
|---|---|---|
| Vol 1 | 2.16/5 | 4.09/5 |
| Vol 2 | 2.81/5 | 4.47/5 |
| Vol 3 | 2.65/5 | 4.32/5 |
| Vol 4 | 2.79/5 | 4.43/5 |
| Vol 5 | 2.76/5 | 4.42/5 |
| Vol 6 | 2.66/5 | 4.33/5 |
| Vol 7 | 2.62/5 | 4.23/5 |
| Vol 8 | 2.61/5 | 4.21/5 |
| Vol 9 | 2.59/5 | 4.25/5 |
| Vol 10 | 2.89/5 | 4.47/5 |
| Vol 11 | 2.66/5 | 4.32/5 |
| Vol 12 | 2.58/5 | 4.27/5 |
| Vol 13 | 2.69/5 | 4.44/5 |
| Vol 14 | 2.98/5 | 4.55/5 |
| Vol 15 | 2.43/5 | 4.09/5 |
| Vol 16 | 2.64/5 | 4.27/5 |
| Vol 17 | 2.44/5 | 4.09/5 |
| Vol 18 | 2.57/5 | 4.19/5 |
| Vol 19 | 2.52/5 | 4.21/5 |
| Vol 20 | 2.72/5 | 4.38/5 |
| Overall | 2.64/5 | 4.55/5 |