| Progress | Difficulty | Peak |
|---|---|---|
| Vol 1 | 2.60/5 | 3.92/5 |
| Vol 2 | 2.59/5 | 4.12/5 |
| Vol 3 | 2.44/5 | 3.62/5 |
| Vol 4 | 2.48/5 | 3.52/5 |
| Vol 5 | 2.51/5 | 4.27/5 |
| Vol 6 | 2.45/5 | 4.09/5 |
| Vol 7 | 2.51/5 | 4.12/5 |
| Vol 8 | 2.59/5 | 4.17/5 |
| Vol 9 | 2.56/5 | 4.29/5 |
| Vol 10 | 2.39/5 | 4.06/5 |
| Vol 11 | 2.31/5 | 3.75/5 |
| Vol 12 | 2.47/5 | 4.06/5 |
| Vol 13 | 2.47/5 | 3.72/5 |
| Vol 14 | 2.76/5 | 4.19/5 |
| Vol 15 | 2.63/5 | 4.09/5 |
| Overall | 2.52/5 | 4.29/5 |