| Progress | Difficulty | Peak |
|---|---|---|
| Vol 1 | 2.29/5 | 4.41/5 |
| Vol 2 | 2.25/5 | 4.29/5 |
| Vol 3 | 2.52/5 | 4.05/5 |
| Vol 4 | 2.49/5 | 4.28/5 |
| Vol 5 | 2.59/5 | 4.25/5 |
| Vol 6 | 2.44/5 | 4.44/5 |
| Vol 7 | 2.57/5 | 4.09/5 |
| Vol 8 | 2.76/5 | 4.47/5 |
| Vol 9 | 2.75/5 | 4.43/5 |
| Vol 10 | 2.59/5 | 4.17/5 |
| Vol 11 | 2.77/5 | 4.51/5 |
| Vol 12 | 2.84/5 | 4.51/5 |
| Vol 13 | 2.65/5 | 4.19/5 |
| Vol 14 | 2.97/5 | 4.63/5 |
| Vol 15 | 2.59/5 | 4.09/5 |
| Vol 16 | 2.87/5 | 4.69/5 |
| Vol 17 | 2.74/5 | 4.52/5 |
| Overall | 2.63/5 | 4.69/5 |