| Progress | Difficulty | Peak |
|---|---|---|
| Vol 1 | 2.75/5 | 4.12/5 |
| Vol 2 | 2.83/5 | 4.34/5 |
| Vol 3 | 2.68/5 | 4.30/5 |
| Vol 4 | 2.96/5 | 4.41/5 |
| Vol 5 | 2.75/5 | 4.36/5 |
| Vol 6 | 2.71/5 | 4.29/5 |
| Vol 7 | 3.25/5 | 4.52/5 |
| Vol 8 | 2.96/5 | 4.41/5 |
| Vol 9 | 3.41/5 | 4.52/5 |
| Vol 10 | 2.98/5 | 4.41/5 |
| Vol 11 | 2.79/5 | 4.38/5 |
| Vol 12 | 3.30/5 | 4.56/5 |
| Vol 13 | 3.82/5 | 4.59/5 |
| Vol 14 | 2.92/5 | 4.53/5 |
| Vol 15 | 3.56/5 | 4.58/5 |
| Vol 16 | 3.83/5 | 4.59/5 |
| Overall | 3.09/5 | 4.59/5 |