| Progress | Difficulty | Peak |
|---|---|---|
| Vol 1 | 3.68/5 | 4.51/5 |
| Vol 2 | 3.59/5 | 4.51/5 |
| Vol 3 | 3.88/5 | 4.59/5 |
| Vol 4 | 3.87/5 | 4.57/5 |
| Vol 5 | 3.65/5 | 4.54/5 |
| Vol 6 | 3.69/5 | 4.53/5 |
| Vol 7 | 3.88/5 | 4.58/5 |
| Vol 8 | 3.70/5 | 4.52/5 |
| Vol 9 | 3.63/5 | 4.50/5 |
| Vol 10 | 3.90/5 | 4.58/5 |
| Vol 11 | 3.78/5 | 4.55/5 |
| Vol 12 | 3.75/5 | 4.57/5 |
| Vol 13 | 3.77/5 | 4.55/5 |
| Vol 14 | 4.08/5 | 4.63/5 |
| Vol 15 | 3.00/5 | 4.37/5 |
| Overall | 3.72/5 | 4.63/5 |