| Progress | Difficulty | Peak |
|---|---|---|
| Vol 1 | 2.24/5 | 3.65/5 |
| Vol 2 | 2.21/5 | 4.06/5 |
| Vol 3 | 2.20/5 | 3.59/5 |
| Vol 4 | 2.37/5 | 4.09/5 |
| Vol 5 | 2.44/5 | 4.03/5 |
| Vol 6 | 2.57/5 | 4.39/5 |
| Vol 7 | 2.82/5 | 4.32/5 |
| Vol 8 | 2.58/5 | 4.25/5 |
| Vol 9 | 2.48/5 | 4.09/5 |
| Vol 10 | 2.33/5 | 4.00/5 |
| Vol 11 | 2.21/5 | 4.09/5 |
| Vol 12 | 2.41/5 | 3.71/5 |
| Vol 13 | 2.28/5 | 4.06/5 |
| Vol 14 | 2.76/5 | 4.43/5 |
| Vol 15 | 2.09/5 | 4.12/5 |
| Vol 16 | 2.38/5 | 4.21/5 |
| Vol 17 | 2.11/5 | 4.12/5 |
| Vol 18 | 2.58/5 | 4.35/5 |
| Vol 19 | 2.50/5 | 3.96/5 |
| Vol 20 | 2.62/5 | 4.29/5 |
| Vol 21 | 2.29/5 | 3.24/5 |
| Overall | 2.40/5 | 4.43/5 |