| Progress | Difficulty | Peak |
|---|---|---|
| Vol 1 | 2.51/5 | 4.39/5 |
| Vol 2 | 2.50/5 | 4.45/5 |
| Vol 3 | 2.75/5 | 4.16/5 |
| Vol 4 | 2.52/5 | 3.46/5 |
| Vol 5 | 2.52/5 | 4.56/5 |
| Vol 6 | 2.57/5 | 4.33/5 |
| Vol 7 | 2.44/5 | 3.89/5 |
| Vol 8 | 2.58/5 | 4.39/5 |
| Vol 9 | 2.70/5 | 4.54/5 |
| Vol 10 | 2.78/5 | 4.15/5 |
| Vol 11 | 2.73/5 | 4.36/5 |
| Overall | 2.60/5 | 4.56/5 |