| Progress | Difficulty | Peak |
|---|---|---|
| Vol 1 | 2.69/5 | 4.44/5 |
| Vol 2 | 2.61/5 | 4.39/5 |
| Vol 3 | 2.83/5 | 4.43/5 |
| Vol 4 | 2.79/5 | 4.39/5 |
| Vol 5 | 2.66/5 | 4.42/5 |
| Vol 6 | 2.52/5 | 4.36/5 |
| Vol 7 | 2.32/5 | 4.23/5 |
| Vol 8 | 2.33/5 | 4.23/5 |
| Vol 9 | 2.80/5 | 4.52/5 |
| Vol 10 | 2.68/5 | 4.47/5 |
| Vol 11 | 3.00/5 | 4.53/5 |
| Vol 12 | 3.45/5 | 4.57/5 |
| Vol 13 | 4.06/5 | 4.62/5 |
| Vol 14 | 3.89/5 | 4.59/5 |
| Vol 15 | 2.41/5 | 4.45/5 |
| Overall | 2.87/5 | 4.62/5 |